Alcatel-Lucent 7705 Interface Configuration Manual page 115

e1
Syntax [no] e1
Context config>port>tdm
Description This command enables the context to configure E1 parameters. E1 is a basic time-division
multiplexing scheme used to carry digital circuits. It is also a standard WAN digital communication
format designed to operate over copper facilities at a rate of 2.048 Mb/s.
Once a channel has been configured for E1, all ports on the T1/E1 ASAP Adapter card can only be
configured for E1. There cannot be a mix of DS1 and E1 channels on the same card.
The no form of this command deletes the specified E1 channel.
Default None
length
Syntax length {133 | 266 | 399 | 533 | 655}
Context config>port>tdm
Description This command configures the line length for the physical DS1 port on the T1/E1 ASAP Adapter card.
Default 133
line-impedance
Syntax line-impedance {75 | 100 | 120}
Context config>port>tdm
Description This command configures the line impedance of a port. Line impedance is set on a per-port basis and
ports on the same card can have different values. Before changing the line impedance of a port, the
port must be shut down.
Default
100 for DS1
120 for E1
Parameters
7705 SAR OS Interface Configuration Guide
Values 100 for DS1
120 or 75 for E1
7705 SAR Interfaces
Page 115