Implementing Subrate T3 - Cisco 10000 Series Configuration Manual

Chapter 6 1-Port Channelized OC-12/STM-4 Line Card Configuration

Implementing Subrate T3

You can implement subrate T3 by specifying the bandwidth for an unchannelized T3 interface. To do so,
use the dsu bandwidth bandwidth command from interface configuration mode.
dsu bandwidth bandwidth
[no] bandwidth bandwidth
Where bandwidth is a numeric value between 0 and 44,210 kbps.
The default bandwidth is 44,210 kbps.
To return to the default bandwidth, use the no form of this command.
When you specify a value, the software sets the bandwidth to the closest acceptable bandwidth based on
the timeslot size for the current DSU mode.
For you to properly use this command, the remote side of the connection must have a Cisco 7200 router
or Cisco 7500 router with a PA-T3 or PA-2T3 port adapter or a T3 DSU supported by the dsu mode
command.
In the following example, a bandwidth of 16,000 kbps is specified:
Router(config)# interface serial 1/0/0.1
Router(config-if)# dsu bandwidth 16000
Setting a Framing Type
To specify a framing type for the unchannelized T3 controller, use the framing command.
framing
[no] framing
The default framing type is c-bit.
Use the no form of this command to restore the default framing type.
In the following example, framing is set to m13:
Router(config)# interface serial 1/0/0.1
Router(config-if)# framing m13
Specifying a DSU Mode
To specify a DSU mode for a selected T3 interface, use the dsu mode command from interface
configuration mode. This command configures the line card to emulate a manufacturer's proprietary
multiplexing scheme.
dsu mode
verilink-lowbit
[no] dsu mode
The default DSU mode is cisco.
Use the no form of the command to return the DSU mode to its default.
In the following example, the DSU mode is set to cisco:
Router(config)# interface serial 1/0/0.1
Router(config-if)# dsu mode cisco
OL-8834-04
[ | ]
c-bit m13
[ | ]
c-bit m13
[ | |
Adtran cisco Digital-link
]
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Kentrox Larscom verilink-highbit
Cisco 10000 Series Router Line Card Configuaration Guide
Creating a T3, VT, or AUG Controller
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