Specifications

Configure a Channelized T3 Interface Processor
IC-82
Cisco IOS Interface Configuration Guide
To specify the timeslots used by each T1 channel, use the following commands beginning in global
configuration mode:
Note The 56-kbps speed is valid only for T1 channels 21 through 28.
Note T1 channels on the CT3IP are numbered 1 to 28 rather than the more traditional zero-based
scheme (0 to 27) used with other Cisco products. This is to ensure consistency with telco numbering
schemes for T1 channels within channelized T3 equipment.
If you need to change any of the default configuration attributes, use the first command in global
configuration mode, followed by any of the optional commands in controller configuration mode:
Table 6 CT3IP T1 Channel Defaults
Attribute Default Value
Speed 64 kbps
Framing esf
Clock source internal
Linecode b8zs
T1 yellow alarm detection and generation
Step Command Purpose
1 controller t3 slot/port-adapter/port Select the CT3IP and enter controller configuration
mode.
2 t1 channel timeslot range [speed {56 |
64}]
Configure the timeslots (values are 1 to 24) for the T1
channel (values are 1 to 28) and optionally specify the
speed for each T1 channel.
Command Purpose
controller t3 slot/port-adapter/port Select the CT3IP and enter controller configuration
mode.
t1 channel framing {esf | sf} Change the framing format used by the T1 channel
(values are 1 to 28).
t1 channel clock source {internal | line} Change the clock source used by the T1 channel
(values are 1 to 28).
t1 channel linecode {ami | b8zs} Change the line coding used by the T1 channel (values
are 1 to 28).
no t1 channel yellow {detection | generation} Disable detection or generation of a yellow alarm on
the T1 channel (values are 1 to 28).