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A circuit line is the physical line that carries frame relay, data, voice, or ATM traffic between customer equipment and an IPX or IGX 8400 series node. Each piece of equipment in the illustration above is attached to the node through a circuit line. After a card has been "upped" with the upcd command, a circuit line on that card can be "upped" and configured.
This chapter:
The following table shows the permissible card combinations for IPX and IGX 8400 series circuit lines.
Type | Country | Electrical Signal Format | Ones Density Requirement | Multiplexing |
J1 | Japan | Coded Mark Inversion (CMI) |
| 31 channels @ 64kbps each |
E1 | Others | Alternate Mark Inversion (AMI) | High density bipolar 3 (HDB3) | 31 channels @ 64kbps each 1 E1 line on CDP/CVM, 8 E1 lines on UFM) |
T1 | USA ASIA | Alternate Mark Inversion (AMI) | Bipolar Zero Substitution (B8ZS) | 24 channels @ 64kbps each 1 T1 line on CDP/CVM, 8 T1 lines on UFM |
Service | Node Type | Front Card | Back Card |
---|---|---|---|
Frame Relay | IGX 8400 series | UFM-4C, UFM-8C | UFI-8T1-DB15, UFI-8E1-DB15, UFI-8E1-BNC |
Frame Relay | IPX/IGX 8400 series | FRP/FRM | FRI/V.35, FRI/X.21 |
Frame Relay | IPX/IGX 8400 series | FRP-6, FRP-31/FRM-6, | FRI-T1, FRI-E1 |
Frame Relay | IPX/IGX 8400 series | FRP-2, FRM-2 | FRI-2-X.21 |
Frame Relay | IGX 8400 series | UFM-Cor UFM-U | UFI-8T1-DB15 |
High Speed Data | IPX/IGX 8400 series | SDP/HDM | SDI/RS-232 |
Low Speed Data | IPX/IGX 8400 series | LDP | LDI4/RS-232 |
Voice | IPX/IGX 8400 series | CDP/CVM | BC-T1 |
Frame relay, data, and voice connections require an active circuit line. Use the commands in the following steps to establish a circuit line and its parameters. The card must be active (upcd) before these commands can execute.
Step 2 Use cnfcln to configure the circuit line.
The upcln and cnfcln commands establish the general parameters for the circuit line. They do not establish specific frame relay, data, or voice parameters. Refer to the appropriate chapter for details of setting up a particular service on a circuit line/ line. For example, the Data Connections chapter describes specific commands for data connections, and the Frame Relay Connections chapter describes specific commands for frame relay connections.
The following describes related commands.
The following list shows the full command name and starting page for each command description.
Mnemonic | Description | Page |
---|---|---|
cnfcln | Configure circuit line | |
dncln | Down circuit line | |
dspclncnf | Display circuit line configuration | |
dsplcns | Display circuit lines | |
prtclns | Print circuit lines | |
upcln | Up circuit line |
Configures a circuit line to be compatible with the devices to which it connects. See Table 6-2 for information about the appropriate card types for establishing connections to an IPX, IGX 8400 series, or BPX 8620.
configure circuit line
cnfcln <(see parameters table)>
cnftrk, dsplncnf
Privilege | 1 |
Jobs | Yes |
Log | Yes |
Node | IPX, IGX 8400 series |
Lock | Yes |
cnfcln 14
Configure voice circuit line 14.
alpha TRM YourID:1 IPX 16 8.4 Mar. 23 1996 09:55 PST
CLN 14 Configuration T1/24 CDP slot: 13
Loop clock: --
Line framing: --
coding: --
CRC: --
recv impedance: --
E1 signalling: --
encoding: --
T1 signalling: --
cable type: --
length: --
56KBS Bit Pos: --
pct fast modem: --
Last Command: cnfcln 14
Next Command:
cnfcln 7 n 2
Configure a frame relay T1 line for the following options: no loop clock and a receive impedance of 75 ohms.
alpha TRM YourID:1 IPX 16 8.4 Mar. 23 1996 09:55 PST
CLN 14 Configuration T1/24 FRPslot: 13
Loop clock: --
Line framing: ESF
coding: ZCS
CRC: --
recv impedance: --
E1 signalling: --
encoding: --
T1 signalling: --
cable type: ABAH
length: 0-133 ft.
56KBS Bit Pos: --
pct fast modem: --
Last Command: cnfcln 7 n 2
Next Command:
Parameter | Description | Default |
---|---|---|
slot or slot.line | Specifies the line. If the back card has one circuit line connector and cable, enter the slot number. If the card has more than one physical line, include a line number. | |
loop clock | Enables the transmit and receive control leads to use the same clock. Format for the parameter is Y or N | N |
line framing | Configures T1 line framing: D4 or ESF. Note that UFM is ESF only. | D4 (ESF on UFM cards) |
line coding | Configures T1 and E1 coding: |
|
| T1: ZCS B8ZS AMI | ZCS |
| E1: HDB3 ZCS | HDB3 |
line CRC on | Enables CRC-4 detection for E1 lines. Use either Y or N | N |
E1 recv impedance | Parameter Impedance Description 1 75 ohm unbalanced 2 75 ohm balanced 3 120 ohm balanced 4 0-133 ft ABAM cable 5 133-266 ft ABAM cable 6 266-399 ft ABAM cable 7 399-533 ft ABAM cable | 1 |
signalling | E1: Common channel signalling (CCS) or | CAS |
| T1: ABCD or ABAB (with ESF line framing) or AB (with D4 line framing); | AB |
encoding | Alaw | Alaw |
cable type/length | Parameter Voice Circuits Frame Relay Circuits 1 0-220 ft. MAT cable CSU Network Interface 2 220-440 ft MAT cable 0-133 ft ABAM cable 3 440-655 ft MAT cable 133-266 ft ABAM cable 4 0-133 ft ABAM cable 266-399 ft ABAM cable 5 133-266 ft ABAM cable 399-533 ft ABAM cable 6 266-399 ft ABAM cable 533-655 ft ABAM cable 7 399-533 ft not used 8 533-655 ft not used | 4 |
56kbs bit stuffing | most significant byte (msb) | msb |
pct fast modem | Expected ADPCM fast connections (range 0-100). High speed modems preclude the use of ADPCM. Consequently, channel load requirements increase over that required for a voice channel. The pct fast modem parameters specify the expected channel utilization (%) by a high speed modem. | 20 |
Deactivates a circuit line. Before you use dncln, use delcon to remove all connections on the line.
down circuit line
dncln <slot | slot.line>
upcln, dspclns
Privilege | 1-2 |
Jobs | Yes |
Log | Yes |
Node | IPX, IGX 8400 series |
Lock | Yes |
dncln 12
Deactivate circuit line 12.
Parameter | Description |
---|---|
slot or slot.line | Specifies the line. If the back card has one circuit line connector and cable, enter the slot number. If the card has more than one physical line, include a line number. |
Displays the configuration of a line. Table 6-6 lists the line configuration information displayed.
Screen Item | Description | Options |
---|---|---|
CLN configuration | Line type and the number of channels. | T1 |
Loop clock | Specifies whether the receive clock is | Y |
Line framing | Idnetifies the type of T1 line framing | DS4 |
Line coding | Identifies the line coding used by | E1: HDB3, AMI |
CRC | Specifies the CRC checking on E1 lines | Y |
recv impedance | Nominal impedance for the receive line. | 75 ohms balanced or unbalanced 120 ohms balanced |
E1 signalling | Identifies the signalling type used for E1. | CCS or ABCD with CAS |
encoding | Specifies the voice encoding scheme | µlaw |
T1 signalling | Identifies the signalling type used for T1 | ABCD or ABAB (with ESF line framing) or AB (with D4 line framing); CCS is available in timeslot 24 if applicable PBXs need it. |
Cable type | Specifies the T1 or E1 cable type (used | MAT |
Cable length | Specifies the T1 or E1 cable length in | 0-220 220-440 440-655 0-133 133-266 |
display circuit line configuration
dspclcnf <slot | slot.line>
cnfcln
Privilege | 1-6 |
Jobs | No |
Log | No |
Node | IPX, IGX 8400 series |
Lock | No |
dspclncnf 9
Displays configuration for line 9.
D2.cb1 LAN SuperUser IPX 32 8.4 Jul. 24 1996 11:53 P
CLN 9 Configuration T1/24 FRP slot: 9
Loop clock: No
Line framing: ESF
coding: B8ZS
CRC: --
recv impedance: --
E1 signalling: --
encoding: --
T1 signalling: --
cable type: ABAM
length: 266-399 ft.
56KBS Bit Pos: --
pct fast modem: --
Last Command: dspclncnf 9
Next Command:
MAJOR ALARM
Parameter | Description | |
---|---|---|
slot or slot.line | Specifies the line. If the back card has one circuit line connector and cable, enter the slot number. If the card has more than one physical line, include a line number. |
|
Displays configuration information for circuit lines. The information includes the line number, the type of circuit line, and the line alarm status. The line type shows whether the line is J1, T1, or E1 and shows the number of configured channels. Line status categories include:
· ClearLine OK | Alarm Information Signal |
· Loss of Signal | Remote Out of Frame (for T1) |
· Out of Frame (for T1) | Remote Out of Packet Frame |
· MajorLocal CGA (RED) | MinorRemote CGA (YEL) |
· MinorBad clock source | Loss of Multiframe (for E1) |
display circuit lines
dspclns
dncln, dsptrks, upcln
Privilege | 1-6 |
Jobs | No |
Log | No |
Node | IPX, IGX 8400 series |
Lock | No |
dspclns
Displays circuit lines for node.
gamma TRM YourID:1 IPX 16 8.4 Mar. 15 1996 18:08 CST
CLN Type Current Line Alarm Status
14 T1/24 Clear - Line OK
15 T1/24 Clear - Line OK
Last Command: dspclns
Next Command:
Prints the current circuit line configuration for the IPX or IGX 8400 series node. This command uses the same syntax, and prints the same information as is displayed using the dspclns command. See the dspclns command for syntax and output information.
print circuit line configuration
prtclns
dspclns
Privilege | 1-6 |
Jobs | Yes |
Log | No |
Node | IPX, IGX 8400 series |
Lock | Yes |
prtclns
Prints circuit line for the node.
Activates a circuit line on an IPX or IGX 8400 series. A circuit line consists of a cable for transmitting data and the interface circuitry for the line. The cable can be a coaxial wire, fiber optic, or a twisted pair. See Table 6-2 for information on card combinations.
The upcln command makes the line visible and usable to the network. You must execute upcln at both ends of the line. Executing upcln at only one end of the circuit line eventually causes an alarm. Once both ends of the line are active, you can configure the line's signal characteristics for the data you intend for the circuit line. See cnfcln for information on defining these characteristics.
up circuit line
upcln <slot | slot.line>
cnfcln, dspclns, dncln
Privilege | 1 |
Jobs | Yes |
Log | Yes |
Node | IPX, IGX 8400 series |
Lock | Yes |
upcln 5
Activate circuit line 5.
Parameter | Description |
---|---|
slot or slot.line | Specifies the line. If the back card has one line, enter the slot number. If the card has more than one physical line, specify a line number. |
Posted: Thu Jan 18 13:03:15 PST 2001
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