Table Of Contents
Specifications
BNM-T3 Specification
Intershelf Link
Card General
BNM-E3 Specification
Intershelf Link
Card General
BNM-155 Specifications
Intershelf Link Specifications
ASC Specification
SRM-T1/E1 Specification
FRSM-4T1 Specification
Service Interface
System Interface
Virtual Circuits
Card General
FRSM-4E1 Specification
Service Interface
System Interface
Virtual Circuits
FRSM-8T1 Specification
Service Interface
System Interface
Virtual Circuits
Card General
FRSM-8E1 Specification
Service Interface
System Interface
Virtual Circuits
FRSM-HS2 Specification
Errors and Alarm Handling
External Interface Specification
AUSM Specification (4 Port)
Service Interface (T1)
Service Interface (E1)
ATM Interface
Virtual Circuits
Card General
CESM-4T1/E1 Specification
Service Interface (T1/E1)
Virtual Circuits
MATM Specification
Physical Layer Interface T1:
Physical Layer Interface E1
Physical Layer Interface T3
Physical Layer Interface E3
AIM Groups and Links
Card General
Specifications
BNM-T3 Specification
Intershelf Link
T3 line interface connector:
|
BNC connector per ANSI T1.404
|
T3 cable recommended:
|
Coax, 75 ohm, 728A or equivalent
|
T3 line signal:
|
DSX-3 Specification per ANSI T1.102 and ATT PUB 54014
|
T3 line rate:
|
44.736 Mbps ± 895 bps
|
T3 framing:
|
Asynch. C-bit Parity per ANSI T1.107a
|
Input jitter tolerance:
|
Per ATT TR 54014, Category II Equipment
|
Output jitter generation:
|
Per ATT TR 54014, Table B1, "Equipment with DS3 Oscillator" Category
|
PMD layer alarms:
|
LOS, OOF, AIS, RAI
|
PMD layer performance statistics:
|
LCV, LES, % EFS, LSES, SEFS, PCV, PES, PSES, SEFS, UAS
|
Trans. convergence protocol:
|
PLCP per TR-TSV-000773
|
TC layer alarms:
|
OOF, RAI
|
TC layer performance statistics:
|
BIP8-CV, BIP8-ES, BIP8-SES, SEFS, UAS
|
ATM layer protocol:
|
Header check sum is XORed with the COSET function
(0 x 55) per CCITT I.361
|
ATM layer counters:
|
Number of cells received good
Number of cells received and discarded due to bad HEC
Number of cells transmitted good
Number of cells received from cell bus
Number of cells transmitted to cell bus
|
Diagnostics:
|
Header of first cell received with invalid egress translation entries
Number of cells dropped due to invalid egress translation entries
|
Card General
Synchronization:
|
Derives 8-kHz shelf synchronization clock from a variety of sources:
• Internal 8-kHz clock (10 ppm)
•BNM-T3 PLCP
•External T1/E1 clock port with a clock rate of
1.544 Mbps ± 50 bps (T1) or 2.048 Mbps ± 100 bps (E1)
|
External Office clock interface:
|
DB-15 connector using LM-T3/E3-D (T1/E1 clock)
BNC connector using LM-T3/E3-B (E1 clock)
Alarm interface: CO compatible alarm indicator and control
DB-15 connector
|
Indicators:
|
Per card: active (green), failed (red), standby (yellow)
T3 Interface: active and okay (green)
Active and local alarm (red)
Active and remote alarm (yellow)
Minor DS-3 statistical alarm
|
Maintenance/Serviceability Features:
|
Internal isolation loopbacks
External remote loopback
Hot-pluggable
|
•Reliability:
|
> 65000 hours MTBF
|
•Card Size:
|
BNM-T3: 7.25 in. x 16.25 in.
LM-T3E3-D: 7.25 in. x 4.5 in.
LM-T3E3-B: 7.25 in. x 4.5 in.
|
•Power:
|
-48V DC, 25W
|
BNM-E3 Specification
Intershelf Link
E3 Line Interface Connector:
|
BNC connector per ANSI T1.404
|
E3 Cable Recommended:
|
Coax, 75 ohm, 728A or equivalent
|
E3 Line Signal:
|
Per G.703
|
E3 Line Rate:
|
34.368 Mbps ± 20 PPM
|
E3 Framing:
|
G.832 and G.804
|
Input Jitter Tolerance:
|
Per G.703
|
Output Jitter Generation:
|
Per G.703
|
PMD Layer Alarms:
|
LOS, OOF, AIS, RAI
|
PMD Layer Performance Statistics:
|
LCV, LES, %EFS, LSES, SEFS, PCV, PES, PSES, SEFS, UAS
|
Trans. Convergence Protocol:
|
PLCP per TR-TSV-000773
|
TC Layer Alarms:
|
OOF, RAI
|
TC Layer Performance Statistics:
|
BIP8-CV, BIP8-ES, BIP8-SES, SEFS, UAS
|
ATM Layer Protocol:
|
Header check sum is XORed with the COSET function (0x55) per CCITT I.361
|
ATM Layer Counters:
|
Number of cells received good
Number of cells received and discarded due to bad HEC
Number of cells transmitted good
Number of cells received from cell bus
Number of cells transmitted to cell bus
|
Diagnostics:
|
Header of first cell received with invalid egress translation entries
Number of cells dropped due to invalid egress translation entries
Number of unacknowledged cells transmitted to cell bus
|
Card General
Synchronization:
|
Derives 8-kHz shelf synchronization clock from a variety of sources:
•E3 physical interface
•External T1/E1 clock port with a clock rate of 1.544 Mbps ± 50 bps (T1) or 2.048 Mbps ± 100 bps (E1)
|
External Office clock interface:
|
DB15 connector using LM-T3/E3-D (T1/E1 clock)
BNC connector using LM-T3/E3-B (E1 clock)
|
Alarm interface:
|
CO compatible alarm indicator and controls DB-15 connector
|
Indicators:
|
|
•Per Card:
|
Active (green), failed (red), standby (yellow)
|
•E3 Interface:
|
Active and okay (green)
Active and local alarm (red)
Active and remote alarm (yellow)
Minor DS-3 statistical alarm
|
•Shelf Voltage:
|
Voltage okay (green) B voltage okay (green)
|
•Alarms:
|
Major (red), minor (yellow) ACO (yellow), history (green)
|
Maintenance/Serviceability Features:
|
Internal isolation loopbacks
External remote loopback
Hot-pluggable
|
•Card Size:
|
BNM-T3: 7.25 in. x 16.25 in.
LM-T3E3-D: 7.25 in. x 4.5 in.
LM-T3E3-B: 7.25 in. x 4.5 in.
|
•Power:
|
-48V DC, 25W
|
BNM-155 Specifications
Intershelf Link Specifications
Common Specifications
Framing:
|
SONET STS-3c per ANSI T1.105
|
PMD Layer Alarms:
|
Loss of signal (LOS)
Severely errored framing (SEF)
Loss of frame (LOF)
Line alarm indication signal (AIS-L)
STS path alarm indication signal (AIS-P)
Line remote defect indication (RDI-L)
Loss of pointer (LOP)
STS path remote defect indication (RDI-P)
|
Transmission Convergence Protocol:
|
Per GR-253-CORE and ANSI T1.105
|
TC Layer Alarm:
|
Loss of cell delineation (LCD)
|
ATM Layer Protocol:
|
Header check sum is XORed with the COSET function (0 x 55) per CCITT I.361
|
ATM Layer Counters:
|
Number of cells received good
Number of cells received and discarded due to bad HEC
Number of cells transmitted good
|
Diagnostics:
|
Number of cells received from cell bus
Number of cells transmitted to cell bus
Number of unacknowledged cells transmitted to cell bus
Header of first cell received with invalid egress translation errors
Number of cells dropped due to invalid ingress translation errors
Number of cells dropped due to invalid egress translation entries
|
SMF Specific Specifications
SMF Line Interface Connector:
|
SC connectors
|
Fiber Recommendation:
|
Single-mode
|
Maximum Fiber Length:
|
20 km
|
SMF Line Signal:
|
Optical, SONET OC-3c per ANSI T1.105 and GR-253-CORE
|
SMF Line Rate:
|
155.52 Mbps
|
Input Jitter Tolerance:
|
Per Gr-253-CORE
|
Output Jitter Generation:
|
Per Gr-253-CORE
|
General Card Specifications
Synchronization:
|
Derives 8 kHz shelf synchronization clock from a variety of sources:
•Internal 8 kHz (±10 ppm)
•BNM-155 PLCP
•External T1/E1 clock port with a clock rate of 1.544 MHz ±50 ppm (T1) or 2.048 MHz ± 100 bps (E1)
|
External Clock Interface:
|
DB-15 connector or BNC connector (both are available)
|
Alarm Interface:
|
CO compatible alarm indicator and controls via DB-15 connector
|
Indicators:
|
Ten LEDs
|
•Per Card
|
Active (green)
Failed (red)
Standby (amber)
|
•OC-3 Interface
|
Single multihue LED
Active and okay (green)
Active and local alarm (red)
Active and remote alarm (amber)
|
•Shelf Voltage
|
A voltage okay (green)
B voltage okay (green)
|
•Alarms
|
Major (red)
Minor (amber)
ACO (amber)
History (green)
|
Maintenance Serviceablity Features:
|
Internal isolation loopbacks
External remote loopbacks
Hot-pluggable
|
•Reliability
|
> 65000 hours MTBF
|
•Card Size
|
BNM-155: 7.25 in. x 16.25 in.
SMF-155-LM: 7.25 in. x 4.5 in.
UTP-155-LM: 7.25 in. x 4.5 in.
|
•Power
|
-48V DC, 25W
|
ASC Specification
802.3 LAN Interface Connector:
|
AUI interface using DB-15 connector control port: DB-25 RS232 connector; Asynch interface, 99200 baud, 1 start,
1 stop, no parity
|
Troubleshooting Interface:
|
Maintenance port: DB-25 RS232 connector; Asynch interface, 9600 baud, 1 start, 1 stop, no parity
|
Indicators:
|
Per card: active (green), failed (red), standby (yellow)
LAN activity/flashing green
|
Maintenance/ Serviceability Features:
|
RS232 maintenance/debug port
Internal isolation loopbacks
Hot-pluggable
|
•Reliability:
|
•> 65000 hours MTBF
|
•Card Size:
|
•ASC: 7.25 in. x 16.25 in.
•LM_ASC: 7.0 in. x 4.5 in.
|
•Power:
|
•-48V DC, 25W
|
SRM-T1/E1 Specification
T1/E1 Line Interface Connector:
|
BNC-3T#
Standby SM requires a special line module:
R-DB15-4T1 if active cards use DB15-4T1
R-DB15-4E1 if active cards use DB15-4E1
R-BNC-4E1 if active cards use BNC
R-RJ48-8T1 if active cards use RJ-48-8T1
R-RJ48-8E1 if active cards use RJ-48-8E1
R-SNB-4E1 if active cards use SMB-8E1
|
Line Rate:
|
T1: 1.544 Mbps ±75 bps (50 ppm)
E1: 2.048 Mbps ± 100 bps (50 ppm)
|
Transmit Clocking:
|
Normal or looped timed
|
Input Jitter Tolerance:
|
Per AT&T Accunet T1.5 Service 1990 - T1
Per G.703 - E1
|
Physical Layer Alarms:
|
Indicated in service modules
|
Physical Layer Performance Statistics:
|
N/A
|
Indicators:
|
|
•Per Card:
|
Active (green), failed (red), standby (yellow)
|
•BERT:
|
Active (green), errors (yellow)
|
•1 to N Redundancy:
|
Active (green)
|
•Indicator for each T3:
|
Active (green)
|
Maintenance/Serviceability Features:
|
DS1 Loopback toward service modules
Hot pluggable
|
•Reliability:
|
>85000 hous MTBF
|
•Card Size:
|
Front card: 7.25 in. x 16.25 in.
Back card: 7 in. x 4.5 in.
|
•Power:
|
48V DC, 50 W
|
Loopback codes:
|
Fractional T1 in-band loopback -
ANSI T1/E1-2/92-003 R3
DS0 loopback -
TA-TSY-000055
TA-TSY-000057
TA-TSY-0000476
|
Monitoring trouble codes:
|
TA-TSY-000077
TA-TSY-0000280
ATT TR-62310
|
FRSM-4T1 Specification
Service Interface
Line Interface connector:
|
DB-15—when used with LM-DB15-4T1 line module
|
Line Rate:
|
1.544 Mbps ± 50 bps
|
Line Framing:
|
ESF per ATT TR 54016
|
Synchronization:
|
Transmitter can be either loop-timed to receiver or synchronized to shelf (called normal mode)
|
Input Jitter Tolerance:
|
Per ATT TR 62411
|
Output Jitter Generation:
|
Per ATT TR 62411 using normal mode synchronization
|
Physical Layer Alarms:
|
LOS, OOF, AIS, RAI
|
Number of Frame Relay Ports:
|
1-Single Frame Relay stream occupying n consecutive time slots
|
Frame Relay Interface Rates:
|
Either 56 kbps or n* 64 kbps; n as defined previously
|
Frame Relay Interface:
|
Per ANSI T1.618, 2-octet header
|
Frame Relay Performance Counters (per port; n x DS0):
|
Receive frames discarded due to Aborts
Receive frames discarded due to illegal header (EA bits)(S)
Receive frames discarded due to CRC errors (S)
Receive frames discarded due to alignment errors (S)
Receive frames discarded due to unknown DLCI (S)
Receive frames discarded due to illegal frame length (S)
Receive frames discarded due to DE threshold exceeded
Receive frames with DE already set
Receive frames with FECN already set
Receive frames with BECN already set
Receive frames tagged FECN
Receive frames (S)
Receive bytes (S)
Transmit frames discarded due to underrun
Transmit frames discarded due to Abort
Transmit frames discarded due to egress Q-depth exceeded (S)
Transmit bytes discarded due to egress Q-depth exceeded (S)
Transmit frames discarded due to egress DE threshold
exceeded Transmit frames (S)
|
| |
Transmit bytes (S)
Transmit Frames with FECN set (S)
Transmit Frames with BECN set (S)
|
| |
LMI receive status inquiry request count (S)
LMI transmit status inquiry request count
LMI invalid receive status count (S)
LMI signaling protocol (keep alive time-out count) (S)
LMI sequence number error count (S)
LMI receive status transmit count (in response to request)
LMI transmit status transmit count (in response to request)
Transmit frames during LMI alarm (S)
Transmit bytes during LMI alarm (S)
LMI update status transmit count (in response to configuration changes)
|
Diagnostics (per port):
|
Last unknown DLCI received
|
System Interface
ATM Layer:
|
Per CCITT I.361 and ATM UNI v3.1
|
AAL Layer:
|
AAL5 per Draft CCITT I.363
|
FR-Cell Interworking:
|
Per Draft CCITT I.555 and I.36x.1, as summarized in
Frame Relay Forum, FR/ATM PVC Interworking Implementation Agreement FRF.5
|
Virtual Circuits
Channels (Endpoints):
|
256 per card—can be allocated across any of the Frame Relay interfaces
|
Counters:
|
|
Service Counters:
|
Number of frames received (S)
Number of bytes received (S)
Number of frames received with DE already set (S)
Number of bytes received with DE already set (S)
Number of frames received with unknown DLCI
Number of frames received but discarded (S)
Number of received bytes discarded (S)
Number of received bytes discarded due to exceeded Q-depth (S)
Number of frames received and discarded due to
•intershelf alarm
•exceeded DE threshold
•exceeded Q depth
Number of frames received with FECN set
Number of frames received with BECN set
Number of frames received tagged FECN
Number of frames received tagged BECN
|
| |
Number of frames transmitted (S)
Number of bytes transmitted (S)
|
| |
Number of frames transmitted with DE set
Number of frames discarded due to reassembly error (S)
Number of frames transmitted during LMI logical port alarm
Number of frames transmitted with FECN set
Number of frames transmitted with BECN set
Number of transmit frames discarded
Number of transmit bytes discarded
Number of transmit frames discarded due to: CRC error (S)
•egress Q depth exceeded
•egress DE threshold exceeded source abort
•physical link failure (T1)
ATM cells—Number of cells transmitted to BNM
Number of cells transmitted with CLP bit set
Number of OAM AIS cells transmitted
Number of OAM FERF cells transmitted
Number of BCM cells transmitted
Number of OAM end-end loopback cells transmitted
Number of OAM segment loopback cells transmitted
Number of cells received from BNM
Number of cells received with CLP bit set
Number of OAM AIS cells received
Number of OAM FERF cells received
Number of BCM cells received
Number of OAM end-end loopback cells received
Number of OAM segment loopback cells received
Number of OAM cells discarded due to CRC-10 error (S)
|
Statistics:
|
All previous counters followed by an (S) can be configured as statistics
|
Diagnostics:
|
Last unknown LCN received cells with unknown LCN count
|
Card General
Indicators:
|
|
•Per Card:
|
Active (green), standby (yellow), fail (red)
|
•Lines (one per):
|
Active and okay (green)
Active and local alarm (red)
Active and remote alarm (yellow)
|
Maintenance/Serviceability Features:
|
Internal problem isolation loopbacks hot-pluggable
|
•Reliability:
|
> 65000 hours MTBF
|
•Card Size:
|
FRSM-4T1: 7.25 in. x 16.25in.
LM-DB15-4T1: 7.0 in. x 4.5 in.
Power: -48V DC, 30W (4 T1s)
|
FRSM-4E1 Specification
Service Interface
Line Interface connector:
|
DB-15 when used with LM-DB15-4E1 line module
BNC when used with LM-BNC-4E1 line module
|
Line Rate:
|
2.048 Mbps ± 100 bps
|
Synchronization:
|
Transmitter can be either loop-timed to receiver or synchronized to shelf (called normal mode)
|
Input Jitter Tolerance:
|
Per G.703
|
Output Jitter Generation:
|
Per G.703
|
Physical Layer Alarms:
|
LOS, OOF, AIS, RAI
|
Number of Frame Interfaces:
|
I to 31 occupying n where 1 < n < 31. Sum of all < 31 for CCS. 1-30 for CAS
|
Frame Relay Interface Rates:
|
Either 56 kbps or n* 64 kbps; n as defined previously
|
Frame Relay Interface:
|
Per ANSI T1.618, 2-octet header
|
Frame Relay Performance Counters (per port; n x DS0):
|
Receive frames discarded due to aborts
Receive frames discarded due to illegal header (EA bit)(S)
Receive frames discarded due to CRC errors (S)
Receive frames discarded due to alignment errors (S)
Receive frames discarded due to unknown DLCI (S)
Receive frames discarded due to illegal frame length (S)
Receive frames discarded due to DE threshold exceeded
Receive frames with DE already set
Receive frames with FECN already set
Receive frames with BECN already set
Receive frames tagged FECN
Receive frames (S)
Receive bytes (S)
|
| |
Transmit frames discarded due to underrun
Transmit frames discarded due to Abort
Transmit frames discarded due to egress Q-depth exceeded (S)
Transmit bytes discarded due to egress Q-depth exceeded (S)
Transmit frames discarded due to egress DE threshold exceeded Transmit frames (S)
Transmit bytes(S)
Transmit Frames with FECN set (S)
Transmit Frames with BECN set (S)
LMI receive status inquiry request count (S)
LMI transmit status inquiry request count
LMI invalid receive status count (S)
LMI signaling protocol (keep alive time-out count) (S)
LMI sequence number error count (S)
LMI receive status transmit count (in response to request)
LMI transmit status transmit count (in response to request)
Transmit frames during LMI alarm (S)
Transmit bytes during LMI alarm (S)
LMI update status transmit count (in response to configuration changes)
|
Diagnostics (per port):
|
Last unknown DLCI received
|
System Interface
ATM Layer:
|
Per CCITT I.361 and ATM UNI v3.1
|
AAL Layer:
|
AAL5 per Draft CCITT I.363
|
FR-Cell Interworking:
|
Per Draft CCITT I.555 and I.36x.1, as summarized in
Frame Relay Forum, FR/ATM PVC Interworking Implementation Agreement FERF.5
|
Virtual Circuits
Channels (Endpoints):
|
256 per card—can be allocated across any of the Frame Relay interfaces
|
Counters:
|
Service counters: Number of frames received (S)
Number of bytes received (S)
Number of frames received with DE already set (S)
Number of bytes received with DE already set (S)
Number of frames received with unknown DLCI
Number of frames received but discarded (S)
Number of received bytes discarded (S)
Number of received bytes discarded due to exceeded Q-Depth (S)
Number of frames received and discarded due to
•intershelf alarm
•exceeded DE threshold (S)
•exceeded Q depth (S)
Number of frames received with FECN set
Number of frames received with BECN set
|
| |
Number of frames received tagged FECN
Number of frames received tagged BECN
Number of frames transmitted (S)
Number of bytes transmitted (S)
Number of frames transmitted with DE set (S)
Number of frames discarded due to reassembly errors (S)
Number of frames transmitted during LMI logical port alarm (S)
Number of frames transmitted with FECN set (S)
Number of frames transmitted with BECN set (S)
Number of transmit frames discarded (S)
Number of transmit bytes discarded
Number of transmit frames discarded due to: CRC error (S)
•egress Q depth exceeded (S)
•egress DE threshold exceeded source abort physical link failure (T1)
|
| |
ATM cells: Number of cells transmitted to BNM
Number of cells transmitted with CLP bit set
Number of OAM AIS cells transmitted (S)
Number of OAM FERF cells transmitted (S)
Number of BCM cells transmitted
Number of OAM end-end loopback cells transmitted (S)
Number of OAM segment loopback cells transmitted
Number of cells received from BNM
Number of cells received with CLP bit set
Number of OAM AIS cells received (S)
Number of OAM FERF cells received (S)
Number of BCM cells received
Number of OAM end-end loopback cells received (S)
Number of OAM segment loopback cells received
Number of OAM cells discarded due to CRC-10 error (S)
|
Statistics:
|
All previous counters followed by an (S) can be configured as statistics.
|
Diagnostics:
|
8 Last unknown LCN received
Cells with unknown LCN count
Card general
|
Indicators:
|
Per card: Active (green), standby (yellow), fail (red)
Lines (one per): Active and okay (green)
Active and local alarm (red),
Active and remote alarm (yellow)
|
Maintenance/Serviceability Features:
|
Internal problem isolation loopbacks
Hot-pluggable
|
•Card Size:
|
FRSM-4E1: 7.25 in. x 16.25 in.
LM-DB15-4E1: 7.0 in. x 4.5 in.
LM-BNC-4E1: 7.0 in x 4.5 in.
|
•Power:
|
-48V DC, 30W (4 E1s)
|
•Ingress:
|
8000 cell buffer shared between virtual channels/paths
Standard usage parameter control (UPC)
Selective cell discard
Virtual circuit queuing
EFCI setting per VC
|
•Egress:
|
8000 cell storage capacity shared between four ports
Up to 12-user-selectable egress queues per port
Selective cell discard
EFCI setting per queue
|
FRSM-8T1 Specification
Service Interface
Line Interface connector:
|
RJ-48 when used with LM-RJ-48-8T1 line module
|
Line Rate:
|
1.544 Mbps ± 50 bps
|
Line Framing:
|
ESF per ATT TR 54016
|
Synchronization:
|
Transmitter can be either loop-timed to receiver or synchronized to shelf (called normal mode)
|
Input Jitter Tolerance:
|
Per ATT TR 62411
|
Output Jitter Generation:
|
Per ATT TR 62411 using normal mode synchronization
|
Physical Layer Alarms:
|
LOS, OOF, AIS, RAI
|
Number of Frame Relay Ports:
|
1-Single Frame Relay stream occupying n consecutive time slots
|
Frame Relay Interface Rates:
|
Either 56 kbps or n * 64 kbps; n as defined previously
|
Frame Relay Interface:
|
Per ANSI T1.618, 2-octet header
|
Frame Relay Performance Counters (per port; n x DS0):
|
Receive frames discarded due to aborts
Receive frames discarded due to illegal header (EA bit) (S)
Receive frames discarded due to CRC errors (S)
Receive frames discarded due to alignment errors (S)
Receive frames discarded due to unknown DLCI (S)
Receive frames discarded due to illegal frame length (S)
Receive frames discarded due to DE threshold exceeded
Receive frames with DE already set
Receive frames with FECN already set
Receive frames with BECN already set
Receive frames tagged FECN
Receive frames (S)
Receive bytes (S)
Transmit frames discarded due to underrun
Transmit frames discarded due to abort
Transmit frames discarded due to egress Q-depth exceeded (S)
Transmit bytes discarded due to egress Q-depth exceeded (S)
Transmit frames discarded due to egress DE threshold
exceeded transmit frames (S)
|
| |
Transmit bytes (S)
Transmit frames with FECN set (S)
Transmit frames with BECN set (S)
|
| |
LMI receive status inquiry request count (S)
LMI transmit status inquiry request count
LMI invalid receive status count (S)
LMI signaling protocol (keep alive time-out count) (S)
LMI sequence number error count (S)
LMI receive status transmit count (in response to request)
LMI transmit status transmit count (in response to request)
Transmit frames during LMI alarm (S)
Transmit bytes during LMI alarm (S)
LMI update status transmit count (in response to configuration changes)
|
Diagnostics (per port):
|
Last unknown DLCI received
|
System Interface
ATM Layer:
|
Per CCITT I.361 and ATM UNI v3.1
|
AAL Layer:
|
AAL5 per draft CCITT I.363
|
FR-Cell Interworking:
|
Per draft CCITT I.555 and I.36x.1, as summarized in
Frame Relay Forum, FR/ATM PVC Interworking Implementation Agreement FRF.5
|
Virtual Circuits
Channels (Endpoints):
|
256 per card—can be allocated across any of the Frame Relay interfaces
|
Counters:
|
|
Service Counters:
|
Number of frames received (S)
Number of bytes received (S)
Number of frames received with DE already set (S)
Number of bytes received with DE already set (S)
Number of frames received with unknown DLCI
Number of frames received but discarded (S)
Number of received bytes discarded (S)
Number of received bytes discarded due to exceeded Q-depth (S)
Number of frames received and discarded due to
•intershelf alarm exceeded DE threshold (S)
•exceeded Q depth (S)
Number of frames received with FECN set
Number of frames received with BECN set
Number of frames received tagged FECN
Number of frames received tagged BECN
|
| |
Number of frames transmitted (S)
Number of bytes transmitted (S)
|
| |
Number of frames transmitted with DE set (S)
Number of frames discarded due to reassembly errors (S)
Number of frames transmitted during LMI logical port alarm (S)
Number of frames transmitted with FECN set (S)
Number of frames transmitted with BECN set (S)
Number of transmit frames discarded (S)
Number of transmit bytes discarded
Number of transmit frames discarded due to: CRC error (S)
•egress Q depth exceeded (S)
•egress DE threshold exceeded source abort
•physical link failure (T1)
ATM cells—Number of cells transmitted to BNM
Number of cells transmitted with CLP bit set
Number of OAM AIS cells transmitted (S)
Number of OAM FERF cells transmitted (S)
Number of BCM cells transmitted
Number of OAM end-end loopback cells transmitted (S)
Number of OAM segment loopback cells transmitted
Number of cells received from BNM
Number of cells received with CLP bit set
Number of OAM AIS cells received (S)
Number of OAM FERF cells received (S)
Number of BCM cells received
Number of OAM end-end loopback cells received (S)
Number of OAM segment loopback cells received
Number of OAM cells discarded due to CRC-10 error (S)
|
Statistics:
|
All previous counters followed by an (S) can be configured as statistics
|
Diagnostics:
|
Last unknown LCN received cells with unknown LCN count
|
Card General
Indicators:
|
|
•Per Card:
|
Active (green), standby (yellow), fail (red)
|
•Lines (one per):
|
Active and okay (green)
Active and local alarm (red)
Active and remote alarm (yellow)
|
Maintenance/Serviceability Features:
|
Internal problem isolation loopbacks hot-pluggable
|
•Reliability:
|
•> 65000 hours MTBF
|
•Card Size:
|
•FRSM-8T1: 7.25 in. x 16.25 in.
LM-DB15-4T1: 7.0 in. x 4.5 in.
Power: -48V DC, 30W (8 T1s)
|
FRSM-8E1 Specification
Service Interface
Line Interface connector:
|
RJ-48 when used with LM-RJ-48-8E1 line module SMB when used with LM-SMB-8E1 line module
|
Line Rate:
|
2.048 Mbps ± 100 bps
|
Synchronization:
|
Transmitter can be either loop-timed to receiver or synchronized to shelf (called normal mode)
|
Input Jitter Tolerance:
|
Per G.703
|
Output Jitter Generation:
|
Per G.703
|
Physical Layer Alarms:
|
LOS, OOF, AIS, RAI
|
Number of Frame Interfaces:
|
1 to 31 occupying n where 1 < n < 31. Sum of all < 31 for CCS 1-30 for CAS
|
Frame Relay Interface Rates:
|
Either 56 Kbps or n * 64 kbps; n as defined previously
|
Frame Relay Interface:
|
Per ANSI T1.618, 2-octet header
|
Frame Relay Performance Counters (per port; n x DS0):
|
Receive frames discarded due to aborts
Receive frames discarded due to illegal header (EA bit) (S)
Receive frames discarded due to CRC errors (S)
Receive frames discarded due to alignment errors (S)
Receive frames discarded due to unknown DLCI (S)
Receive frames discarded due to illegal frame length (S)
Receive frames discarded due to DE threshold exceeded
Receive frames with DE already set
Receive frames with FECN already set
Receive frames with BECN already set
Receive frames tagged FECN
Receive frames (S)
Receive bytes (S)
|
| |
Transmit frames discarded due to underrun
Transmit frames discarded due to abort
Transmit frames discarded due to egress Q-depth exceeded (S)
Transmit bytes discarded due to egress Q-depth exceeded (S)
Transmit frames discarded due to egress DE threshold exceeded Transmit frames (S)
Transmit bytes (S)
Transmit frames with FECN set (S)
Transmit frames with BECN set (S)
LMI receive status inquiry request count (S)
LMI transmit status inquiry request count
LMI invalid receive status count (S)
LMI signaling protocol (keep alive time-out count) (S)
LMI sequence number error count (S)
LMI receive status transmit count (in response to request)
LMI transmit status transmit count (in response to request)
Transmit frames during LMI alarm (S)
Transmit bytes during LMI alarm (S)
LMI update status transmit count (in response to configuration changes)
|
Diagnostics (per port):
|
Last unknown DLCI received
|
System Interface
ATM Layer:
|
Per CCITT I.361 and ATM UNI v3.1
|
AAL Layer:
|
AAL5 per draft CCITT I.363
|
FR-Cell Interworking:
|
Per draft CCITT I.555 and I.36x.1, as summarized in
Frame Relay Forum, FR/ATM PVC Interworking Implementation Agreement FERF.5
|
Virtual Circuits
Channels (Endpoints):
|
256 per card—can be allocated across any of the Frame Relay interfaces
|
Counters:
|
|
Service Counters:
|
Number of frames received (S)
Number of bytes received (S)
Number of frames received with DE already set (S)
Number of bytes received with DE already set (S)
Number of frames received with unknown DLCI
Number of frames received but discarded (S)
Number of received bytes discarded (S)
Number of received bytes discarded due to exceeded Q-Depth (S)
Number of frames received and discarded due to
•intershelf alarm
•exceeded DE threshold (S)
•exceeded Q depth (S)
Number of frames received with FECN set
Number of frames received with BECN set
|
| |
Number of frames received tagged FECN
Number of frames received tagged BECN
Number of frames transmitted (S)
Number of bytes transmitted (S)
Number of frames transmitted with DE set (S)
Number of frames discarded due to reassembly errors (S)
Number of frames transmitted during LMI logical port alarm (S)
Number of frames transmitted with FECN set (S)
Number of frames transmitted with BECN set (S)
Number of transmit frames discarded (S)
Number of transmit bytes discarded
Number of transmit frames discarded due to: CRC error (S)
•egress Q depth exceeded (S)
•egress DE threshold exceeded source abort physical link failure (T1)
|
| |
ATM cells: Number of cells transmitted to BNM
Number of cells transmitted with CLP bit set
Number of OAM AIS cells transmitted (S)
Number of OAM FERF cells transmitted (S)
Number of BCM cells transmitted
Number of OAM end-end loopback cells transmitted (S)
Number of OAM segment loopback cells transmitted
Number of cells received from BNM
Number of cells received with CLP bit set
Number of OAM AIS cells received (S)
Number of OAM FERF cells received (S)
Number of BCM cells received
Number of OAM end-end loopback cells received (S)
Number of OAM segment loopback cells received
Number of OAM cells discarded due to CRC-10 error (S)
|
Statistics:
|
All previous counters followed by an (S) can be configured as statistics.
|
Diagnostics:
|
8 Last unknown LCN received
Cells with unknown LCN count
Card general
|
Indicators:
|
Per card: Active (green), standby (yellow), fail (red)
Lines (one per): Active and okay (green)
Active and local alarm (red),
Active and remote alarm (yellow)
|
Maintenance/Serviceability Features:
|
Internal problem isolation loopbacks
Hot-pluggable
|
•Card Size:
|
FRSM-8E1: 7.25 in. x 16.25 in.
RJ48-8E1: 7.0 in. x 4.5 in.
SMB-8E1: 7.0 in. x 4.5 in.
|
•Power:
|
-48V DC, 30W (8 E1s)
|
•Ingress:
|
8000 cell buffer shared between virtual channels/paths
Standard usage parameter control (UPC)
Selective cell discard
Virtual circuit queuing
EFCI setting per VC
|
•Egress:
|
8000 cell storage capacity shared between four ports
Up to 12 user selectable egress queues per port
Selective cell discard
EFCI setting per queue
|
FRSM-HS2 Specification
Errors and Alarm Handling
Line Alarms
•Control lead inactive
•Recovered clock does not match configured line rate
External Interface Specification
General
•Frame Relay Interface: Per ANSI T1.618, 2-octet header
•ATM layer: Per CCITT I.361 and ATM UNI v3.1
•AAL layer: AAL5 per Draft CCITT I.363.
•FR-cell interworking: Per Draft CCITT I.555 and I.36x.1, as summarized in ATM-to-Frame Relay Interoperability Implementation Agreement v 1.0
Physical Interface Specification
FRSM-VHS Front Card
•Card status indicator LEDs
–Active (green)
–Failed (red)
–Standby (yellow)
•Line status indicator LEDs
–Active and okay (green)
–Active and local alarm (red)
–Active and remote alarm (yellow)
•Reliability 85000 hours MTBF (target)
•Card size 7.25 in. x 16.5 in.
•Power 48V DC, 50W (estimate)
FRSM-HS2 Back Card
•Power: 5W @ 5V; 6W C @ -5V
FRSM-HS2 Line
•Number of HSSI lines 2
•Line interface connector SCSI-2
•Line framing not applicable
•Synchronization: Transmitter can be either loop-timed to receiver (DTE mode), or synchronized to shelf, (DCE mode)
•Input jitter tolerance
•Output jitter
Statistics and Counters Specifications
FRSM-HS2
Counters (per line)
|
Receive frames lost due to aborts
Receive frames lost due to illegal header (EA bit)
Receive frames lost due to CRC errors
Receive frames with bit alignment errors
Receive frames with unknown DLCI
Receive frames with illegal frame length
Receive good frame
|
| |
Transmit frames lost due to under-run/Abort count
Transmit good frame
|
| |
LMI status inquiry request count
LMI signaling protocol (keep alive time-out count)
LMI sequence number error count
LMI status transmit count (in response to request)
LMI update status transmit count (in response to configuration changes
|
| |
Frames FECN set count
Frames BECN set count
DE frames discarded count
|
| |
Number of frames reassembled but discarded due to service
interface physical layer alarm
|
Trouble shooting statistics:
|
ECN current queue depth (per channel)
|
| |
|
| |
|
Statistics
Service: Number of frames received
Number of bytes received
Number of frames received with DE = 1
Number of frames received but discarded
Number of received bytes discarded
Number of frames received but discarded due to:
- CRC error
- Illegal frame length
- Alignment error
- Abort
Number of frames reassembled and transmitted
Number of frames reassembled and transmitted with DE=1
Number of frames discarded due to reassembly errors
Number of frames transmitted
Number of bytes transmitted
Number of frames transmitted with DE set
Number of frames transmitted during LMI logical port alarm
Frames FECN set count
Frames BECN set count
Number of transmit frames discarded
Number of transmit bytes discarded
Number of transmit frames discarded due to:
- CRC error
- Illegal frame length
- Alignment error
- Abort
- Exceeding DE egress queue threshold
- Physical link failure
ATM cells: Number of cells transmitted to BNM
Number of cells discarded due to intershelf link alarm
Number of cells transmitted with CLP bit set
Number of AIS cells transmitted
Number of FERF cells transmitted
Number of BCM cells transmitted
Number of end-end loop-back cells transmitted
Number of segment loop-back cells transmitted
Number of cells received from BNM
Number of cells received with CLP bit set
Number of AIS cells received
Number of FERF cells received
Number of BCM cells received
Number of end-end loop-back cells received
Number of segment loop-back cells received
Number of OAM cells discarded due to CRC-10 error
Diagnostics: Header of last cell with unknown LCN
Header of last received frame with unknown DLCI
ECN current queue depth
AUSM Specification (4 Port)
Service Interface (T1)
Line Interface Connector:
|
Miniature 15 pin female DB-15 (100 W)—(Use LM-DB15-4T1)
|
Line Rate:
|
1.544 Mbps ± 50 bps (T1)
|
Synchronization:
|
Transmitter can be either loop-timed or receiver, or synchronized to shelf (called normal mode)
|
Line Code:
|
Bipolar 8 zero substitution (B8ZS) as specified in ANSI T1.408 (T1)
|
Line Framing:
|
Extended superframe format (ESF 24 frame multiframe) as ANSI T1.408
|
ESF Maintenance Functions:
|
Bit-oriented alarm and loopback messages of ESF Data Link as per ANSI T1.408
|
Input Jitter Tolerance:
|
Per ATT TR 62411
|
Output Jitter Generation:
|
Per ATT TR 62411 using normal mode synchronization
|
Physical Layer Alarms:
|
LOS, OOF, AIS, RAI
|
Physical Layer Performance Stats:
|
LCV, LES, LSES, CV, ES, SES, SEFS, AISS, UAS
|
Service Interface (E1)
Line Interface Connector:
|
Miniature 15 pin female DB-15 (120 W)—(Use LM-DB15-4E1), BNC (75 W)—(Use LM-BNC-4E1)
|
Line Rate:
|
2.048 Mbps ± 100 bps (E1)
|
Synchronization:
|
Transmitter can be either loop-timed or receiver, or synchronized to shelf (called normal mode)
|
Line Code:
|
HDB3 (E1)
|
Line Framing:
|
16 frame Multiframe as in G.704
|
Input Jitter Tolerance:
|
As specified in ITU G.823 for 2.048 mbps
|
Output Jitter Generation:
|
As specified in ITU G.823 for 2.048 mbps
|
Physical Layer Alarms:
|
LOS, OOF, AIS, RAI
|
Physical Layer Performance Stats:
|
LCV, LES, LSES, CV, ES, SES, SEFS, AISS, UAS
|
ATM Interface
| |
ATM UNI v3.1, ITU-T G.804, per CCITT I.361
|
Channel Configuration:
|
256 per card. Can be allocated across any of the T1 (E1) ports
|
VPI/VCI:
|
VPI: 0-255
VCI: 0-4096
|
Traffic Classes:
|
CBR, VBR, VBR+
|
UPC Parameters:
|
PCR, SCR (VBR), CCDV (CBR)
|
Congestion Control Support:
|
ForeSight (toward Network for VBR+)
|
ForeSight Parameters:
|
MIR, PIR, Rate Up, Rate Down, QIR, QIR Timeout, IBS
|
Virtual Circuits
Counters:
|
|
•Per Port:
|
Number of cells received from the interface
Number of cells received with unknown VPI/VCI
Last known VPI/VCI received from the port
Number of cells discarded due to error in cell header
Number of cells received with nonzero GRC field
Number of cells transmitted to the interface
Number of cells transmitted for which EFCI was set
Number of egress cells discarded due to service interface physical alarm
|
Endpoint (channel):
|
|
Ingress:
|
Number of cells received from port
Number of cells received from the port with CLP = 1
Number of cells received from the port with EFCI = 1
Number of cells from the port discarded due to queue exceeded QDepth
Number of cells (with CLP) set) discarded due to queue exceeded CLP threshold
Number of cells from the port for which CLP was set due to UPC violations
|
ATMizer channel counters:
|
|
•Ingress:
|
Number of cells transmitted to cell bus
Number of cells to cell bus for which EFCI was set
Number of cells to cell bus discarded due to shelf alarm
|
•Egress:
|
Number of cells received from the cell bus
Number of cells discarded due to queue exceeded QDepth (per egress Q)
Number of cells discarded due to queue exceeded CLP threshold (per egress Q)
Number of cells received with CLP = 1
|
Other Counters:
|
.
|
•Ingress:
|
Number of OAM cells discarded
Number of AIS cells received from the port
Number of RDI (FERF) cells received from the port
Number SegmentLpBk cells received from the port
Number of SegmentLpBk cells transmitted to cell bus
|
•Egress:
|
Number of OAM cells discarded
Number of AIS cells transmitted to the port
Number of SegmentLpBk cells transmitted to the port
Number of SegmentLpBk cells received from the port
|
Diagnostic Stats:
|
Peak Queue Depth (Ingress: per channel)
|
Card General
Indicators:
|
|
•Per Card:
|
Active (green), standby (yellow), fail (red)
|
•Per Line:
|
One per line: Active and okay (green)
Active and local alarm (red)
Active and remote alarm (yellow)
|
Maintenance/Servicability:
|
Facility loopback using loop up/down per ANSI T1.408 and ATT TR 62411 (T1), CCITT G.7xx (E1)
Facility loopback using management console
Internal problem isolation loopbacks
Hot pluggable
|
Card Size:
|
7.25 in. x 15 in.
|
Power:
|
-48V DC, 30W
|
Safety:
|
EN 60950 2nd edition (including EN 41003) UL 1950 2nd edition
|
Compliance:
|
T1: Accunet 62411 E1: G.703, G.823
|
ESD:
|
IEC 1000-4-2
|
CESM-4T1/E1 Specification
Note The CESM-4T1/E1 specification is the same as the FRSM-4T1/4E1 specification except as shown in the following sections.
Service Interface (T1/E1)
Synchronization:
|
Transmitter is synchronized to the shelf (Stratum traceable)
|
Line Framing:
|
None
|
Channel Configuration:
|
|
Number of CBR Interfaces:
|
4
|
Cell Delay Variation (CDV):
|
Configurable by setting reassembly buffer depth to a maximum of 250 msec. CDV = 1/2 buffer depth
|
Virtual Circuits
Channels (Endpoints):
|
One per physical port
|
Counters:
|
|
MIB Name
|
AAL1:
|
|
|
| |
Number of lost SAR-PDUs
Number of buffer overflow events
Number of buffer underflow events
Number of SAR-PDU's with header error
Number of SAR-PDU's received out of sequence
Number of cells played out to T1/E1 port
Number of cell generated from T1/E1 port
Number of bytes discarded due to shelf alarm from port
Number of all 1's cells inserted during buffer underflow
Number of bytes discarded due to egress overflow
|
cesLostCells
cesBufOverflows
cesBufUnderflows
cesHdrErrs
cesCellSeqMismatchCnt
cesReassCells
cesGenCells
cesIngrDiscardedBytes
cesUflowInsCells
cesOflowDropBytes
|
Diagnostic:
|
Egress buffer depth (per port)
|
|
Alarms:
|
|
MIB Name
|
T1/E1 Port:
|
Red, loss of signal (LOS)
Blue, alarm indication signal (AIS)
|
LineAlarmState—bit 5 set
LineAlarmState—bit 2 set and cesChanState = 3
|
| |
Line code violation (LVC)
|
LineStatisticalAlarmState
|
SAR Port:
|
|
|
Transmit State:
|
SendingAIS
Sending FERF
|
cesXmtATMState = 3
cesXmtATMState = 4
|
Receiving State:
|
|
|
| |
Receiving AIS
Receiving FERF
Cell loss
|
cesRcvATMstate = 3
cesRcvATMstate = 4
cesCellLossStatus = 2
|
Note All service specific alarms, except red, are passed through transparently.
Loss of signal (red) at CBR interface results in all 1's cells being transmitted.
Brief periods of cell loss "Starvation" results in insertion of 47 octects of 1's.
Extended periods of cell loss results in all 1's (unframed AIS) being generated.
During periods of cell bus configuration SAR-PDUs are discarded.
MATM Specification
Physical Interface (T3.T1) RJ48-T3T1-LM
|
|
•T1 Line Interface Connector:
|
Miniature RJ-48C, 100 ohms balanced
|
•T3 Line Interface Connector:
|
BNC, 75 ohms unbalanced
|
Physical Interface (E3.E1) RJ48-E3E1-LM:
|
|
•E1 Line Interface Connector:
|
Miniature RJ-48C, 100 ohms balanced
|
•E3 Line Interface connector:
|
BNC, 75 ohms unbalanced
|
Physical Interface (E3.E1B) SMB-E3E1-LM:
|
|
•E1 Line Interface Connector:
|
Miniature SMB, 75 ohms unbalanced
|
•E3 Line Interface Connector:
|
Miniature SMB, 75 ohms unbalanced
|
Physical Layer Interface T1:
Line Rate:
|
1.544 Mbps ± 50 bps
|
IMATM Synchronization:
|
Digital PLL to synchronize all transmitters to one of the following: the T3 line, any of the T1 lines, or the MGX 8220 shelf 8 kHz clock
|
Line Code:
|
Bipolar 8 zero substitution (B8ZS) as specified in ANSI T1.408
|
Line Framing:
|
Extended Superframe Format (ESF 24 frame multiframe) as in ANSI T1.408
|
Input Jitter Tolerance:
|
Per ATT TR 62411
|
Output Jitter Generation:
|
Using normal mode synchronization per ATT TR 62411
|
Physical Layer Alarms:
|
LOS, OOF, AIS, RDI
|
Physical Layer Performance Parms:
|
LCV, LES, LSES, CV, ES, SES, SEFS, AISS, UAS
|
Physical Layer Interface E1
Line Rate:
|
2.048Mbps ± 100 bps
|
IMATM Synchronization:
|
Digital PLL to synchronize all transmitters to one of the following: the E3 line, any of the E1 lines, or the MGX 8220 shelf 8 kHz clock
|
Line Code:
|
HDB3 (E1)
|
Line Framing:
|
16 frame multiframe as in G.704
|
ESF Maintenance Functions:
|
None
|
Input Jitter Tolerance:
|
As specified in ITU G.823 for 2.048 mbps
|
Output Jitter Generation:
|
As specified in ITU G.823 for 2.048 mbps
|
Physical Layer Alarms:
|
LOS, OOF, AIS, RDI
|
Physical Layer Performance Parms:
|
LCV, LES, LSES, CV, ES, SES, SEFS, AISS, UAS
|
Physical Layer Interface T3
Line Rate:
|
44.736 Mbps ± 20 ppm (T3)
|
Line Code:
|
B3ZS for DS3
|
Framing:
|
Physical layer conversion procedure for DS3 to ANSI TA-TSY-000772 and TA-TSY-000773
|
Input Compliance:
|
Per ATT 54014 and CCITT G.703
|
Physical Layer Interface E3
Line Rate:
|
34.368 Mbps ±20 ppm (T3)
|
Line Code:
|
HDB3 for E3
|
Framing:
|
Per ITU-T Recommendation G.804 and G.832
|
Input Jitter Tolerance:
|
Per ATT TR 62411
|
ATM Interface:
|
|
Cell support (type)
|
STI cells
|
Congestion Control:
|
EFCI/FFCI setting on egress (AIM)
|
EFCI setup:
|
Using programmable EFCI threshold
|
IMATM Alarms:
|
Complies with DS3 and G.832 physical layer protocols and supports FERF, LOS, LOF, OOF, AIS, yellow and red alarms
|
AIM Groups and Links
Counters:
|
|
High Speed Port:
|
DS3/E3 physical layer line alarm indication and insertion
DS3/E3 SUNI-PDh number of cells: Tx and Rx
PLL clock recovery status
|
AIM Group:
|
Number of cells received from AIM interface
Number of cell discarded due to error in cell header
Number of cells from AIM interface discarded due to queue Full on both Ingress and egress directions
Number of ACP cells received
Number of ACP cells received with errors
Number of LCP cells received
Number of LCP cells received with errors
|
| |
Number of cells served from Egress queue to AIM interface
Number of cell transmitted by trunk interface, two types: Date and Filler + Data
Number of times a link went off the IMAIM group
|
ATMizer (cellbus) counters:
|
|
Ingress:
|
Numberof cells transmitted
Number of cells discarded due to shelf alarm
|
Egress:
|
Number of cells received
Numberof cells discarded due to queue depth exceeded Q-Depth
|
Card General
Indicators:
|
|
•Per Card:
|
Active (green), standby (yellow), fail (red)
|
•Lines (one per):
|
Active and okay (green)
Active and local alarm (red)
Active and remote alarm (yellow)
|
Maintenance/Serviceability Features:
|
Internal problem isolation loopbacks
Hot-pluggable
|
Card Size:
|
IMATM front card: 7.25 in. x 16.25 in.
RJ48-T3T1-LM: 7.0 in. x 4.5 in.
RJ48-E3E1-LM: 7.0 in. x 4.5 in.
SMB-E3E1-LM: 7.0 in. x 4.5 in.
|
Power:
|
-48V DC
|
