|
This appendix contains information for the hardware that makes up a Cisco MGX 8250. The descriptions apply to the enclosure, power systems, cooling system, and cards. The types of information consist of:
This section describes the physical characteristics and system power requirements for the MGX 8250. For a list of the dimensions, weight, and power consumption for each card, see the "Physical and Electrical Characteristics for Cards" section in this appendix. For a list of the AC power plugs for domestic and international use, see "Cabling Summary."
For quick reference, Table A-1 shows the physical dimensions and power consumption for the switch enclosure.
Item | Value |
---|---|
Card Slot Capacity | Supports combinations of full and single-height service modules. |
Enclosure Size, | Height: 33.25 inches (45.5 cm). Height: 28 inches (71.1 cm.). |
Shipping Weight for Populated Enclosure | DC: 190 lb (87 Kgs) with 2 DC PEMs. |
Shipping Weight for Individual Components | Single-height, front and back cards: 2.48 lb (1.13 Kgs) Card cage with boards: 160 lb (72.73 Kgs) Exhaust plenum: 8 lb Fan tray: 9.5 lb Inlet plenum: 8 lb AC power tray with power supplies: 45 lb |
Clearance Requirement for the Enclosure | Minimum 30 inches front and rear; nominal 12-inch side clearance. |
Power Input Voltage | AC system: Normal operating range is 200-240 VAC, 47 to 63 Hz. The maximum voltage range is 180-264 VAC. Each AC supply can provide up to 1200W. |
Current Requirements, AC System | Configuration-dependent: use Network Design Tool for exact requirements. For general planning purposes: 14.4A at a nominal voltage of 200 VAC. At the minimum voltage limit of 180 VAC, the current draw is a maximum of 16A. |
Current Requirements, DC System | Configuration-dependent: use the Network Design Tool for exact requirements. For general planning purposes: 43.2A at nominal -48 VDC; 49.4A at -42 VDC maximum. |
Input AC Power Connector | IEC 16A input connector. For a list of the AC power plugs for domestic and international use, see Appendix B, "AC Power Cabling" section |
DC Input Connections | Three-position terminal block for 6 AWG wire (10 square millimeters) and #10 screw lugs designed for 6 AWG wire. |
Operating Environment | 0-40 degrees Celsius (32-104 degrees Fahrenheit) normal operation (50 degrees Celsius or 122 degrees Fahrenheit up to |
Shock | Withstands 10 G, 10 ms at 1/2 sine wave. |
Vibration | Withstands 1/4 G, 20-500 Hz. |
AC-powered: maximum 9560 BTUs. |
For quick reference, Table A-2 shows physical dimensions and power consumption for each card. Detailed information for each card appears in the section of this appendix for a specific card.
Module | Back Cards | Front Card Dimensions (inches) | Back Card Dimensions (inches) | Weight (front and back card) | Power Consumption |
---|---|---|---|---|---|
MGX-FRSM-8T1 MGX-FRSM-8E1 MGX-FRSM-8T1c MGX-FRSM-8E1c | 8 T1, 8 E1 | 7.25 x 16.25 | 7.00 x 4.50 | 1.74 lb/ | 30WW |
MGX-FRSM-2CT3 | 2 T3 | 7.25 x 16.25 | 7.00 x 4.50 | 1.74 lb/ | 60W |
MGX-FRSM-2T3E3 | 2 T3, 2 E3 | 7.25 x 16.25 | 7.00 x 4.50 | 1.74 lb/ | 60W |
MGX-FRSM-HS2 | 2 HSSI | 7.25 x 16.25 | 7.00 x 4.50 | 1.74 lb/ | 75W |
MGX-CESM-8T1E1 | 8 T1, 8 E1 | 7.25 x 16.25 | 7.00 x 4.50 | 1.74 lb | 30W |
MGX-CESM-T3E3 | 2 T3, 2 E3 | 7.25 x 16.25 | 7.00 x 4.50 | 1.74 lb/ | 60W |
MGX-AUSM/B-8T1E1 | 8-T1, 8-E1 | 7.25 x 16.25 | 7.00 x 4.50 | 1.74 lb | 30W |
RPM | 4-Ethernet, 1-FE Up to 2 back cards | 15.65 x15.9 | 7.00 x 4.125 | 4.80 lb | 110W |
PXM1 | 2 T3/E3, OC-3c/STM-1, OC12c/STM-4, VI | 15.65 x 15.83 | 7.00 x 4.5 | 4.80 lb | 100W |
This section lists the national and international standards for electromagnetic compatibility and immunity to which this Cisco product complies. It consists of a list of reference documents, a table that indicates applicability of the standards, and the test levels for mandatory and non-mandatory CE mark immunity.
The applicable standards for electromagnetic compatibility and immunity:
Details on how each standard applies for this Cisco product appear in Table A-3.
Category | AC-Powered (220 VAC) | DC-Powered (-48V) |
---|---|---|
U.S.A EMC | FCC Part 15, Class A | not applicable |
Japan EMC | Austel 3548 Class A | not applicable |
Australia EMC | VCCI Class A | not applicable |
CE M mark (EMC and immunity) | EMC: EN 55022 Class A Immunity:
| not applicable |
NEBS (EMC and immunity) | Not applicable | EMC: Immunity: European Telecom Standards (ETSI) for Surge: ETSI 300 386-1, DC power leads only |
EDVT | Cisco Systems: Electronic Design Validation Test (EDVT) Plan | Cisco Systems: Electronic Design Validation Test (EDVT) Plan |
MDVT | Cisco Systems: Mechanical Environmental Design and Qualification Guideline, ENG-3398, Rev. 7. | NEBS requirements, physical: |
The levels for the mandatory CE mark immunity tests are
The levels for the non-mandatory CE mark immunity tests are
This section contains general specifications for the Processor Switching Module (PXM1). The information in Table A-4 includes information for the two types of back cardsthe PXM1-UI user interface for switch and the uplink card for trunking and CPE access.
Category | Description |
---|---|
Maximum switch fabric throughput. | 1.2 Gbps. |
Control access: These ports exist on the PXM1-UI back card. | Control port: RJ-45 connector, EIA/TIA 232, DTE mode, asynchronous interface 19,200 baud, 1 start, 1 stop, no parity. Maintenance port: RJ-45 connector, EIA/TIA 232, DTE mode, asynchronous interface 9600 baud, 1 start bit, 1 stop bit, no parity bits. LAN port: RJ-45 connector, 10-BaseT, 802.3 Ethernet. |
Uplink ports and connectors: An uplink card can haveone of these number and type of connectors. The wavelength on optical lines is 1310 nm. | 2 T3 ports, BNC connectors |
Number of logical ports: | 32 across all physical ports on the uplink card (regardless of line type). |
LEDs on PXM1 front card LEDs display status, but alarm history is a switch. | Status for the card:
LAN activity: flashing green indicates activity. Node alarm:
Node power (note that each AC power supply also has an LED):
Alarm history: ACO Port interface (per port):
|
LEDs on back cards | Green means active. No light means inactive or not provided. |
Stratum-4 synchronization (internal only) | 8 KHz clock derived from
|
Stratum-3 synchronization (internal and external) |
|
BITS clock interface | T1 and E1 with an RJ-45 connector. Note Older systems with a PXM1-UI back card have a SMB connector for E1. |
Trunk history counters | Ingress, per connection: Egress, per connection: |
Connection capacities supported by PXM1 | Maximum number of connections: Maximum aggregate bandwidth: Cell memory: 256K cells. |
Processor clock speed and memory specifics | Clock speed: 200 MHz internal, 50 Mhz external. Flash memory: 2 Mbytes. DRAM: 64 Mbytes, upgradeable to 128 Mbytes. Secondary cache: 512 Kbytes. BRAM: 128 Kbytes. Hard disk: 4 Gbytes. |
Alarm indicators (audible and visual) | Central office-compatible alarm indicators and controls through a DB15 connector. |
Maintenance features | Internal isolation loopback. |
Card dimensions | Front card: 15.65 inches by 16.83 inches (39.75 cm by |
Power | Requires -48 VDC, dissipates 100W. |
This section contains details for the MGX-AUSM/B-8T1E1. For physical characteristics, see Table A-5. For the T1 and E1 characteristics, see Table A-6 and Table A-7, respectively. For ATM interface characteristics, see Table A-8. For statistics and counters, see Table A-9.
Category | Description |
LED Indicators Per Card | Active (green), Standby (yellow), Fail (red) |
LED Indicators Per Line | One per line: Active and OK (green), Active and Local Alarm (red) |
Maintenance and Serviceability | Facility loopback via loop up/down per ANSI T1.408 and |
Card Size | Front card: 7.25" x 16.25" (18.43 cm x 41.28 cm) |
Power | -48 VDC, 30W |
Safety | EN 60950 2nd edition (including EN 41003) UL 1950 2nd edition |
Compliance | T1: Accunet 62411 |
ESD | IEC 1000-4-2 |
Category | Description |
---|---|
Line Interface | RJ48 (100 ohm) on the LM-RJ48-8T1 back card |
Line Rate | 1.544 Mbps ± 50 bps (T1) |
Synchronization | Transmitter can be: loop-timed, Receiver, or synchronized to node (normal mode) |
Line Code | Bipolar 8 Zero Substitution (B8ZS) per ANSI T1.408 (T1) |
Line Framing | Extended Superframe Format (ESF 24 frame multiframe) per ANSI T1.408 |
ESF Maintenance | Bit-oriented alarm and loopback messages of ESF Data Link per ANSI T1.408 |
Input Jitter Tolerance | Per ATT TR 62411 |
Output Jitter | Per ATT TR 62411 using normal mode synchronization |
Physical Layer Alarms | LOS, OOF, AIS, RAI |
Physical Layer Performance Statistics | LCV, LES, LSES, CV, ES, SES, SEFS, AISS, UAS |
Category | Description |
---|---|
Line Interface Connector | RJ48 (120 ohm) on LM-RJ48-8E1, or SMB (75 |
Line Rate | 2.048 Mbps ± 100 bps |
Synchronization | Transmitter can be: loop-timed, Receiver, or synchronized to shelf (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 Statistics | LCV, LES, LSES, CV, ES, SES, SEFS, AISS, UAS |
Category | Description |
Standards | ATM UNI v3.1, ITU-T G.804, per CCITT I.361. |
Channel Configuration | 1000 per card, across any of the T1 or E1 ports. |
VPI/VCI Ranges | VPI: 0-255. |
Traffic Classes | CBR, VBR, rt-VBR, ABR, UBR. |
UPC Parameters | PCR, SCR, rt-VBR, non-rt-VBR, ABR, CCDV (CBR). |
Congestion Control Support | ForeSight (toward Network for ABR), ATM Forum TM 4.0 compliant mechanisms for ABR. |
ForeSight Parameters | MIR, PIR, Rate Up, Rate Down, QIR, QIR Timeout, IBS. |
Counter Type | Description |
---|---|
Per Port | Number of cells received from the interface. |
Endpoint (channel) | |
Ingress | Number of cells received from port. |
ATMizer channel counters | |
Ingress | Number of cells transmitted to cell bus. |
Egress | Number of cells received from the cell bus. |
Other Counters |
|
Ingress | Number of OAM cells discarded. |
Egress | Number of OAM cells discarded. |
Diagnostic Statistics | Peak Queue Depth (Ingress: per channel). |
This section provides details for the following topics:
Interface | Standard |
---|---|
Frame Relay Interface | ANSI T1.618, 2-octet header |
ATM Layer | 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 |
Feature | Significance or Value |
---|---|
Power | 48 VDC, 50W (estimated) |
Card Status Indicator LEDs | |
ACT | Green On indicates the card set is in active mode. |
STBY | Yellow Slow blink without the Active LED indicates the card is in the boot state. Fast blink with the Active LED indicates the card is being downloaded. Fast blink indicates the service module is passing BRAM channel information to the ASC. Steady yellow indicates the card is in Standby mode and the firmware is executing ADMIN code. |
Fail | Red Steady Red with Active and Standby LEDs off indicates either the card is in the Reset condition or the card has failed. Steady Red with Active LED on indicates the card was active prior to failing. Steady Red with Standby LED on indicates the card was standby prior to failing. |
Line Status Indicator LEDs | |
Green | Green indicates the port is active. |
Red | Red indicates a local alarm on the port. |
Yellow | Yellow indicates a remote alarm on the port. Off indicates the port has not been activated (upped). |
Reliability | > 85000 hours MTBF (target) |
Card Size | 7.25 inches by 16.5 inches |
Feature | Significance or Value |
---|---|
Number of T3 Lines | Two |
Line Interface Connector | 75 ohm BNC |
Line Rate | 44.736 Mbps +/- 20 ppm |
Line Coding | B3ZS |
Transmit Timing | Normal or Loop timed |
Input Jitter Tolerance | Per TR-TSY-000499 |
Output Jitter | 0.05 UI maximum with jitter-free input clock |
Output Pulse | Per T1.102.1993 |
The functions of the MGX-FRSM-2CT3 line framer are
For line alarms, the MGX-FRSM-2CT3 supports:
This section provides details for the MGX-FRSM-2T3E3. Where appropriate, it has separate sections for T3 and E3 technologies. Topics consist of
Interface | Standard |
---|---|
Frame Relay Interface | ANSI T1.618, 2-octet header |
ATM Layer | 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 |
Feature | Significance or Value |
---|---|
Power | 48 VDC, 50W (estimated) |
Card Status Indicator LEDs | |
ACT | Green On indicates the card set is in active mode. |
STBY | Yellow Slow blink without the Active LED indicates the card is in the boot state. Fast blink with the Active LED indicates the card is being downloaded. Fast blink indicates the service module is passing BRAM channel information to the ASC. Steady yellow indicates the card is in Standby mode and the firmware is executing ADMIN code. |
Fail | Red Steady Red with Active and Standby LEDs off indicates either the card is in the Reset condition or the card has failed. Steady Red with Active LED on indicates the card was active prior to failing. Steady Red with Standby LED on indicates the card was standby prior to failing. |
Line Status Indicator LEDs | |
Green | Green indicates the port is active. |
Red | Red indicates a local alarm on the port. |
Yellow | Yellow indicates a remote alarm on the port. Off indicates the port has not been activated (upped). |
Reliability | > 85000 hours MTBF (target) |
Card Size | 7.25 inches by 16.5 inches |
The T3 line characteristics appear in Table A-15.
Feature | Significance or Value |
---|---|
Number of T3 Lines | Two |
Line Interface Connector | 75 ohm BNC |
Line Rate | 44.736 Mbps +/- 20 ppm |
Line Coding | B3ZS |
Transmit Timing | Normal or Loop timed |
Input Jitter Tolerance | Per TR-TSY-000499 |
Output Jitter | 0.05 UI maximum with jitter-free input clock |
Output Pulse | Per T1.102.1993 |
For the framing characteristics of T3 operation, the MGX-FRSM-2T3E3
Table A-16 lists the characteristics of the line on an MGX-FRSM-2T3E3 with an E3 back card:
Feature | Significance or Value |
---|---|
Number of E3 Lines | Two |
Line Interface Connector | 75 ohm BNC |
Line Rate | 34.368 Mbps +/- 20 ppm |
Line Coding | HDB3 |
Transmit Timing | Normal or Loop timed |
Input Jitter Tolerance | Per G.823 |
Output Jitter | 0.05 UI maximum with jitter-free input clock per G.823 |
Output Pulse | Per G.703 |
For line framing, the E3 operation of the MGX-FRSM-2T3E3 complies with G.751.
For line alarms, the MGX-FRSM-2T3E3 supports:
For lists of applicable statistics and counters, "Counters and Statistics for FRSM-VHS Cards" in this appendix.
The MGX-FRSM-HS2 is the Frame Relay module with two HSSI ports. The topics in this section are:
For lists of the counters and statistics that are available on the MGX-FRSM-VHS series of cards, see "Counters and Statistics for FRSM-VHS Cards" in this appendix.
Interface | Standard |
---|---|
Frame Relay Interface | ANSI T1.618, 2-octet header |
ATM Layer | 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 |
Feature | Significance or Value |
---|---|
Power | 48 VDC, 50W (estimated) |
Card Status Indicator LEDs | |
ACT | Green On indicates the card set is in active mode. |
STBY | Yellow Slow blink without the Active LED indicates the card is in the boot state. Fast blink with the Active LED indicates the card is being downloaded. Fast blink indicates the service module is passing BRAM channel information to the ASC. Steady yellow indicates the card is in Standby mode and the firmware is executing ADMIN code. |
Fail | Red Steady Red with Active and Standby LEDs off indicates either the card is in the Reset condition or the card has failed. Steady Red with Active LED on indicates the card was active prior to failing. Steady Red with Standby LED on indicates the card was standby prior to failing. |
Line Status Indicator LEDs | |
Green | Green indicates the port is active. |
Red | Red indicates a local alarm on the port. |
Yellow | Yellow indicates a remote alarm on the port. Off indicates the port has not been activated (upped). |
Reliability | > 85000 hours MTBF (target) |
Card Size | Front card: 7.25" x 16.25" (18.43 cm x 41.28 cm) |
Feature | Significance or Value |
---|---|
Number of HSSI Lines | Two |
Connector Type | SCSI-2 |
Line Rate | 44.736 Mbps +/- 20 ppm |
Line Coding | B3ZS |
Line Framing | not applicable |
Line Alarms |
|
Synchronization | Transmitter may be either loop-timed to Receiver (DTE mode), or synchronized to shelf, (DCE mode) |
Input Jitter Tolerance | Per TR-TSY-000499 |
Output Jitter | 0.05 UI maximum with jitter-free input clock |
Output Pulse | Per T1.102.1993 |
This section lists counters and statistics that apply to most types of cards in the FRSM-VHS group (MGX-FRSM-2CT3, MGX-FRSM-2T3E3, and MGX-FRSM-HS2).
Counter |
---|
Received frames lost due to aborts |
Received frames lost due to illegal header (EA bit) |
Received frames lost due to CRC errors |
Received frames with bit alignment errors |
Received frames with unknown DLCI |
Received frames with illegal frame length |
Received 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 with FECN set count |
Frames with BECN set count |
DE frames discarded count |
Number of frames reassembled but discarded due to service interface physical layer alarm |
Service Statistic |
---|
Number of received frames |
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
|
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
|
ATM Cell Statistic |
---|
Number of cells transmitted to PXM1 |
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 PXM1 |
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 |
Diagnostic Statistic |
---|
Header of last cell with unknown LCN |
Header of last received frame with unknown DLCI |
ECN current queue depth |
Troubleshooting Statistic |
---|
ECN current queue depth, per channel |
|
This section provides information on the operation of the MGX-FRSM-8T1 card set. Topics are:
Category | Description |
Indicators per card | Active (Green), Standby (Yellow), Fail (Red) |
Indicators per line | Active and Okay (Green) |
Line Interface connector | RJ-48 when used with RJ48-8T1 back card. |
Line Rate | 1.544 Mbps ± 50 bps |
Line Framing | ESF per ATT TR 54016 |
Maintenance/Serviceability Features | Internal Problem Isolation Loopbacks |
Reliability, MTBF | > 65000 hours |
Card Size | MGX-FRSM-8T1: 7.25" x 16.25" |
Category | Description |
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 |
Category | Description |
---|---|
Synchronization | Transmitter may 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 | One-a single Frame Relay stream occupying N consecutive time slots |
Frame Relay Interface Rates |
|
Frame Relay Interface | Per ANSI T1.618, 2-octet header |
Frame Relay Performance Counters (per Port; n x DS0) | Received frames discarded due to Aborts |
| Transmit byte(s) |
| LMI receive status inquiry request count(s) |
Diagnostics (per port): | Last unknown DLCI received |
Category | Description |
---|---|
Channels (endpoints) per card | 256, which you can allocate across any of the interfaces |
Service Counters | Number of frames received (s) |
| Number of frames transmitted (s) |
| Number of frames transmitted with DE set (s) |
Statistics: | If any of the counters in the preceding category of Service Counters includes an "(s)," you can configure it for statistics usage. |
Diagnostics: | Last unknown LCN received, |
Note An (s) at the end of the description means the data in the counter is usable as a statistic. |
This section provides information on the operation of the MGX-FRSM-8E1 card set. Topics are
Category | Description |
ATM Layer | Per ITU-T 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 |
Category | Description |
---|---|
Line Interface connector | RJ-48 when used with RJ-48-8E1 line module SMB when used with SMB-8E1 line module |
Line Rate | 2.048 Mbps ± 100 bps |
Synchronization | Transmitter may be either loop-timed to Receiver or synchronized to shelf (normal mode) |
Input Jitter Tolerance | Per G.703 |
Output Jitter Generation | Per G.703 |
Physical Layer Alarms | LOS, OOF, AIS, RAI |
Card Status Indicator LEDs | |
ACt | Green On indicates the card set is in active mode. |
STBY | Yellow Slow blink without the Active LED indicates the card is in the boot state. Fast blink with the Active LED indicates the card is being downloaded. Fast blink indicates the service module is passing BRAM channel information to the ASC. Steady yellow indicates the card is in Standby mode and the firmware is executing ADMIN code. |
Fail | Red Steady Red with Active and Standby LEDs off indicates either the card is in the Reset condition or the card has failed. Steady Red with Active LED on indicates the card was active prior to failing. Steady Red with Standby LED on indicates the card was standby prior to failing. |
Line Status Indicator LEDs | |
Green | Green indicates the port is active. |
Red | Red indicates a local alarm on the port. |
Yellow | Yellow indicates a remote alarm on the port. Off indicates the port has not been activated (upped). |
Maintenance/Serviceability Features | Internal Problem Isolation Loopbacks Hot-pluggable cards |
Reliability, MTBF | > 65000 hours |
Card Size | MGX-FRSM-8E1: 7.25" x 16.25" (18.43 cm x 41.28 cm) |
Power | -48V DC, 30W with 8 active E1 lines |
Category | Description |
---|---|
Number of Frame Interfaces | 1-31 occupying n, where 1 < n < 31. Sum of all < 31 for CCS or 1-30 for CAS. |
Frame Relay Interface Rates | Either 56 Kbps or Nx64 Kbps, where n is the same as defined in the preceding item the preceding item "Number of Frame Interfaces." |
Ingress | 8000 cell buffer shared between virtual channels/paths |
Egress | 8000 cell storage capacity shared between four ports |
Frame Relay Interface | Per ANSI T1.618, 2-octet header |
Frame Relay Performance Counters (per Port; NxDS0) | Received frames discarded due to Aborts |
| Transmit frames discarded due to underrun |
Diagnostics (per port): | Last unknown DLCI that arrived |
Category | Description |
---|---|
Channels (Endpoints) | 256 per cardcan be allocated across any of the frame relay interfaces |
Counters | Number of frames received
Number of frames received with FECN set |
Counters | Number of frames received tagged FECN |
ATM cells | Number of cells transmitted to PXM1 |
Specifications for the MGX-SRM-3T3/B appear in Table A-33.
Category | Description |
---|---|
Connectors | BNC-3T3, with three pairs of BNC connectors |
T1/E1 Line Interface Connector on Service Modules | No connectors required for primary service module. If the MGX-SRM-3T3 provides 1:N redundancy, the standby service module requires a special back card: |
T1 Channel Rate | T1: 1.544 Mbps ±75 bps (50 ppm) |
Transmit Clocking | Normal or looped clocking |
Input Jitter Tolerance | Per AT&T Accunet T1.5 Service 1990-T1 |
Physical Layer Alarms | Indicated in respective Service Modules |
Physical Layer Performance Statistics | |
LED Indicators per Card | Active (green), Failed (red), Standby (yellow) |
BERT | Active (green), Errors (yellow) |
1 to N Redundancy | Active (green) |
Indicator for each T3 lone | Active (green) |
Maintenance/Serviceability Features | DS1 Loopback toward service modules Hot pluggable |
Reliability | >85000 hours MTBF |
Card Size | Front card 7.25" (18.43 cm) x 16.25" (41.28 cm) |
Power | 48 VDC, 50W |
Loopback codes | Fractional T1 inband loopback- DS0 loopback- |
Monitoring trouble codes | TA-TSY-000077 |
The physical layer characteristics for the MGX-CESM-T3 and MGX-CESM-E3 are the same as the MGX-CESM-T3 and MGX-CESM-E3, respectively. For these characteristics, refer to Table A-14 and Table A-16. The available counters appear in the lists that follow. The categories are:
The counters for the T3 and E3 line framers are:
The counters for AAL1 SAR are
The counters for transmitted ATM cells are
The counters for received ATM cells are
The diagnostics report the header of last cell with an unknown logical connection number LCN.
This section contains operational details for the MGX-CESM-8T1 and MGX-CESM-8E1.
Category | Description |
---|---|
Back Card | RJ48-8T1 |
Line Rate | T1: 1.544 Mbps ±75 bps (50 ppm) |
Transmit Clocking | Normal clock or SRTS generated |
Line Coding | B8ZS |
Frame mode | SF |
Line alarms | Loss of signal (LOS) |
Alarm indication times | Near end alarm up-count |
Supported OAM cells | AIS |
Physical Layer Performance Statistics | |
LED Indicators Per Card | Active (green), Failed (red), Standby (yellow) |
BERT | T1 E1 1.2 |
1-to-N Redundancy | Active (green) |
Indicator for each T1 | Active (green) |
Reliability, MTBF | |
Card Size | Front card: 7.25" x 16.25" (18.43 cm x 41.28 cm) |
Power | 48 VDC, 50W |
Loopbacks | On or Off |
This section contains operational details for the MGX-CESM-8E1.
Category | Description |
---|---|
Back Card | RJ48-8E or SMB-8E1 |
Line Rate | E1: 2.048 Mbps ± 100 bps (50 ppm) |
Transmit Clocking | Normal clock or SRTS generated |
Line Coding | HDB3 |
Frame mode | single frame |
Line alarms | Loss of signal (LOS) |
Alarm indication times | Near end alarm up-count |
Supported OAM cells | AIS |
Physical Layer Performance Statistics | N/A |
Indicators |
|
Card-level | Active (green), Failed (red), Standby (yellow) |
BERT | Active (green), Errors (yellow) |
1-to-N Redundancy | Active (green) |
Indicator for each T1 | Active (green) |
Reliability, MTBF | |
Card Size | Front card: 7.25" x 16.25" (18.43 cm x 41.28 cm) |
Power | 48 VDC, 50W |
Loopbacks | On or Off |
Posted: Sat Sep 7 06:47:16 PDT 2002
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