Specifications

CSU/DSU Service Module Examples
Configuring Serial Interfaces IC-127
Enable Scrambled Data Coding Example
The following example scrambles bit codes in 64-kbps DDS mode:
Router# service-module 56k clock rate 56
Router# service-module 56k data-coding scrambled
Can configure scrambler only in 64k speed DDS mode
% Service module configuration command failed: WRONG FORMAT.
Router# service-module 56k clock rate 64
Router# service-module 56k data-coding scrambled
Enable Switched Dial-Up Mode Example
The following example displays transmission in switched dial-up mode:
Router# service-module 56k clock rate 19.2
Router# service-module 56k network-type switched
% Have to use 56k or auto clock rate for switched mode
% Service module configuration command failed: WRONG FORMAT.
Router# service-module 56k clock rate auto
Router# service-module 56k network-type switched
Router# dialer in-band
Router# dialer string 2576666
Router# dialer-group 1
Display a Performance Report Example
The following is sample output from the show service-module serial command:
Router1# show service-module serial 1
Module type is 4-wire Switched 56
Hardware revision is B, Software revision is X.07,
Image checksum is 0x45354643, Protocol revision is 1.0
Connection state: active,
Receiver has loss of signal, loss of sealing current,
Unit is currently in test mode:
line loopback is in progress
Current line rate is 56 Kbits/sec
Last user loopback performed:
dte loopback
duration 00:00:58
Last module self-test (done at startup): Passed
Last clearing of alarm counters 0:13:54
oos/oof : 3, last occurred 0:00:24
loss of signal : 3, current duration 0:00:24
loss of sealing curren: 2, current duration 0:04:39
loss of frame : 0,
rate adaption attempts: 0,
Remote Loopback Request Example
The following example enables you to transmit and receive remote loopbacks using the
service-module 56k remote-loopback command:
service-module 56k remote-loopback
Select a Service Provider Example
The following example selects AT&T as the service provider:
service-module 56k network-type switched
service-module 56k switched-carrier att