In some senario of integrating with other vendor's video conferencing devices, it's necessary to disable keepalive message on TE40.
Here is the method of disabling it.
1. Log in the TE40 with SSH or TELNET, the account/pwd is debug/Change_Me (by default)
2. Input the following command:
*TE40&50_DM81680_A8-> mc q931Keepalive set 0
set Q931Keepalive 0.
3. Save the change by using the following command:
*TE40&50_DM81680_A8->ui config save
In addition, the method can be used on TEx0 as well.