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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 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 circuit lines.
Table 6-1 : Input Line Formats
| Type | Country | Electrical Signal Format | Ones Density Requirement | Multiplexing |
| J1 | Japan | Coded Mark Inversion (CMI) | 31 chnls @ 64kbps each | |
| E1 | Others | Alternate Mark Inversion (AMI) | High density bipolar 3 (HDB3) | 31 chnls @ 64kbps each
1 E1 line on CDP/CVM, FRP/FRM 8 E1 lines on UFM) |
| T1 | USA
Canada ASIA |
Alternate Mark Inversion (AMI) | Bipolar Zero Substitution (B8ZS) | 24 chnls @ 64kbps each
1 T1 line on CDP/CVM, FRP/FRM 8 T1 lines on UFM |
Table 6-2 : Circuit Line Card Combinations
| Service | Node Type | Front Card | Back Card |
|---|---|---|---|
| Frame Relay | IPX/IGX | FRP/FRM | FRI/V.35, FRI/X.21 |
| Frame Relay | IPX/IGX | FRP-6, FRP-31/FRM-6,
FRM-31 |
FRI-T1, FRI-E1 |
| Frame Relay | IPX/IGX | FRP-2, FRM-2 | FRI-2-X.21 |
| Frame Relay | IGX | UFM-C | UFI-8T1-DB15
UFI-8E1-DB15 or UFI-8E1-BNC |
| High Speed Data | IPX/IGX | SDP/HDM | SDI/RS-232
SDI/V.35 SDI/RS-422 |
| Low Speed Data | IPX/IGX | LDP | LDI4/RS-232
LDI4/DDS LDI8/RS-232 |
| Voice | IPX/IGX | CDP/CVM | BC-T1
BC-E1 BC-J1 |
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.
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.
Figure 6-1 : Setting up voice lines Figure 6-2 : Setting up data lines Figure 6-3 : Setting up frame relay lines Figure 6-4 : Setting up ATM lines Figure 6-5 : Setting up FastPAD lines The following list shows the full command name and starting page for each command description.
Table 6-3 :
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, or BPX.
Full Name
configure circuit line
Syntax
cnfcln <(see parameters table)>
Related Commands
cnftrk, dsplncnf
Attributes
Example 1 Description
cnfcln 14
Configure voice circuit line 14.
System Response
Example 2 Description
cnfcln 7 n 2
Configure a frame relay T1 line for the following options: no loop clock and receive impedance if 75 ohms.
System Response
Table 6-4 : cnfcln -- Parameters
Deactivates a circuit line. Before deactivating the circuit line, all connections must be removed. Use the delcon command to remove all connections from the circuit line.
Full Name
down circuit line
Syntax
dncln <slot | slot.line>
Related Commands
upcln, dspclns
Attributes
Example Description
dncln 12
Deactivate circuit line 12.
Table 6-5 : dncln -- Parameters
Displays the configuration of a line. The following line configuration information is displayed:
Table 6-6 :
Full Name
display circuit line configuration
Syntax
dspclcnf <slot | slot.line>
Related Commands
cnfcln
Attributes
Example Description
dspclncnf 9
Displays configuration for line 9.
System Response
Table 6-7 : dspclncnf -- Parameters
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 T1 or E1 and shows the number of configured channels. Line Status categories include:
Full Name
display circuit lines
Syntax
dspclns
Related Commands
dncln, dsptrks, upcln
Attributes
Example Description
dspclns
Displays circuit lines for node.
System Response
Prints the current circuit line configuration for the IPX or IGX 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.
Full Name
print circuit line configuration
Syntax
prtclns
Related Commands
dspclns
Attributes
Example Description
prtclns
Prints circuit line for the node.
Activates a circuit line on an IPX or IGX. A circuit line consists of a cable for transmitting data and the interface circuitry for the line. The cable can be coaxle wire, fiber optics, or twisted pair. See Table 6-2 for information regarding card type combinations.
This command makes the line visible to the network. For the network to detect and use the circuit line, upcln must execute at both ends of the line. If the command executes on only one end of the circuit line, an alarm results. Once both ends of the line have been activated, the line signal characteristics for the data intended for the circuit must be configured. See cnfcln for information on defining these characteristics.
Full Name
up circuit line
Syntax
upcln <slot | slot.line>
Related Commands
cnfcln, dspclns, dncln
Attributes
Example Description
upcln 5
Activate the line.
Table 6-8 : upcln -- Parameters
Copyright 1988-1996 © Cisco Systems Inc.
Mnemonic
Description
Page
cnfcln
Configure circuit line
6-5
dncln
Down circuit line
6-9
dspclncnf
Display circuit line configuration
6-10
dsplcns
Display circuit lines
6-12
prtclns
Print circuit lines
6-14
upcln
Up circuit line
6-15
Privilege
1
Jobs
Yes
Log
Yes
Node
IPX, IGX
Lock
Yes
alpha TRM YourID:1 IPX 16 8.2 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:
alpha TRM YourID:1 IPX 16 8.2 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 interface card has only one circuit line connector and cable, only the slot number is necessary. If the card has more than one physical connector, the number for that line is also necessary.
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
ABCD signalling bits with channel associated signalling (CAS)
CAS
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.
AB
encoding
Alaw
mlaw
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)
least significant byte (lsb)
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
Privilege
1--2
Jobs
Yes
Log
Yes
Node
IPX, IGX
Lock
Yes
Parameter
Description
slot or slot.line
Specifies the line. If the interface card has only one circuit line connector and cable, only the slot number is necessary. If the card has more than one physical connector, the number for that line is also necessary.
Screen Item
Description
Options
CLN configuration
Line type and the number of channels.
T1
E1
Loop clock
Specifies whether the receive clock is
looped back to the transmit clock.
Y
N
Line framing
Idnetifies the type of T1 line framing
used by the circuit line.
DS4
ESF
Line coding
Identifies the line coding used by
the circuit line.
E1: HDB3, AMI
T1: ZCS, B8ZS, AMI
CRC
Specifies the CRC checking on E1 lines
Y
N
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
mlaw
Alaw
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
for equalization)
MAT
ABAM
Cable length
Specifies the T1 or E1 cable length in
feet to the CSU or digital cross-connect.
0--220 220--440 440--655
0--133 133--266
Privilege
1--6
Jobs
No
Log
No
Node
IPX, IGX
Lock
No
D2.cb1 LAN StrataCom IPX 32 8.2 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 interface card has only one circuit line connector and cable, only the slot number is necessary. If the card has more than one physical connector, the number for that line is also necessary.
· Clear---Line OK
Alarm Information Signal
· Loss of Signal
Remote Out of Frame (for T1)
· Out of Frame (for T1)
Remote Out of Packet Frame
· Major---Local CGA (RED)
Minor---Remote CGA (YEL)
· Minor---Bad clock source
Loss of Multiframe (for E1)
Privilege
1--6
Jobs
No
Log
No
Node
IPX, IGX
Lock
No
gamma TRM YourID:1 IPX 16 8.2 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:
Privilege
1--6
Jobs
Yes
Log
No
Node
IPX, IGX
Lock
Yes
Privilege
1
Jobs
Yes
Log
Yes
Node
IPX, IGX
Lock
Yes
Parameter
Description
slot
or
slot.line
Specifies the line. If the interface card has only one circuit line connector and cable, only the slot number is necessary. If the card has more than one physical connector, the number for that line is also necessary.
