Configuring A Ct3 Interface; Configuring A Ct3 Interface In T3 Mode - H3C SR6602-X Configuration Manual

Task
Display information about E1-F interfaces.
Display the status of an E1-F interface.
Clear statistics for E1-F interfaces.

Configuring a CT3 interface

Both T3 and T1 belong to the T-carrier system promoted by ANSI. T3 uses the digital signal level
DS-3 and operates at 44.736 Mbps.
CT3 interfaces support the T3 (unchannelized) mode and the CT3 (channelized) mode.
•
In T3 mode, a CT3 interface provides 44.736 Mbps of data bandwidth. No timeslots are divided.
The system automatically creates a synchronous serial interface for it. The serial interface
name uses the serial number/0:0 format.
•
In CT3 mode, a CT3 interface can be demultiplexed into 28 channels of T1 signals. Each T1 line
can be divided into 24 timeslots numbered 1 through 24. Each line on a T1 interface can
operate at either 64 kbps or 56 kbps.
The following are schemes available for creating different rates of T1 lines on a CT3 interface in
CT3 mode:
M × 1.536 Mbps. (M is an integer in the range of 1 to 28.)
N × 56 kbps or N x 64 kbps. (N is an integer in the range of 1 to 24.)
A T1 line can operate in T1 or CT1 mode.
If the T1 line operates in unframed (T1) mode, the system automatically creates a 1544
kbps serial interface for it. The serial interface name uses the serial number/line-number:0
format.
If the T1 line operates in framed (CT1) mode, you can bundle timeslots on it. The system
automatically creates a synchronous serial interface for it. The serial interface name uses
the serial number/line-number:set-number format. This interface operates at n × 64 kbps or
n × 56 kbps, where n is the number of bundled timeslots.
•
The synchronous serial interface created in T3 or CT3 mode has the same logical features as a
standard synchronous serial interface and supports the following protocols:
Data link layer protocols, such as PPP and HDLC.
Network layer protocols, such as IP.
You can configure this interface in the same way you configure a standard synchronous serial
interface.

Configuring a CT3 interface in T3 mode

Step
1. Enter system view.
2. Enter CT3 interface view.
3. Configure the interface to
operate in T3 mode.
4. (Optional.) Configure the
interface to operate in FT3
mode and set the DSU mode
or the subrate.
Command
display fe1 [ serial interface-number ]
display interface serial interface-number
reset counters interface [ serial [ interface-number ] ]
Command
system-view
controller t3 interface-number
using t3
ft3 { dsu-mode { 0 | 2 | 3 | 4 } |
subrate number }
22
Remarks
N/A
N/A
The default operating mode is
CT3 mode.
By default:
•
DSU mode 0 (the digital link
mode) is used.
•
The subrate is 44210 kbps.