Specifications

CHAPTER
19-1
Cisco BPX 8600 Series Installation and Configuration
Release 9.3.0, Part Number 78-10674-01 Rev. D0, July 2001
19
Configuring Circuit Lines
A circuit line is the physical line that carries data, voice, Frame Relay, or ATM traffic between a BPX
node (or IGX node) and customer premises equipment. Each piece of customer premises equipment is
attached to a node through a circuit line.
You must first establish or “up” a card by using the upcd command, before you can “up” and configure
a circuit line on that card.
This chapter:
• Describes input circuit line formats
• Summarizes circuit line card combinations
• Explains how to set up lines
• Lists circuit line commands
Use the cnfln to configure commands (the cnfcln command is obsolete). The switch software prompts
for the parameters appropriate for the card type it detects. For details on each circuit line command, see
the Cisco WAN Switching Command Reference. Note: Line commands are the same as “circuit line”
commands.
Table 19-1 shows the permissible card combinations for CPE-to-IGX lines.
Table 19-1 Input Line Formats
Type Country Electrical Signal Format Ones Density Enforcement 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
1E1lineonCDP/CVM,
FRP/FRM
8E1linesonUFM
T1 USA
Canada
ASIA
Alternate Mark Inversion (AMI) Bipolar Zero Substitution
(B8ZS)
24 channels @ 64kbps each
1T1lineonCDP/CVM,
FRP/FRM
8T1linesonUFM