Specifications

166119 8/31/2006

One method to work around the problem of implementing differing local and remote channel

parameters, is to remove the transmit loop at the sending end of the link for the duration of

the configuration change. While the transmit loop is down, the sending end will neither send

nor receive user channel data, but will continue to produce a framing pattern along with the

inband management channel. The management channel can then be used to make any

configuration changes separately on the local or remote system, after which, the transmit

loop may be re-established to enable the flow of user data.

Another method is to make the configuration change addressed to the remote system first.

While this may also change the local system‟s corresponding configuration parameter to the

same value as a result of the transmit loop, the local system can subsequently be modified to

the desired value without affecting the remote system.

The situation described above may present itself in selecting configuration options from the

following menu screens:

1. Remote Port (#) Interface Types

2. Remote Port (#) TxD Clock

3. Remote Port (#) RTS/CTS Delay

4. Remote Port (#) DCD Source

5. Remote Port (#) Loop Modes

Considering the options available in the preceding menu screens, it is likely that only 1) and

2) would ever be modified from the default setting in a simplex data transmission

environment.