MGCP gateway loses configuration setting

[themizzz21]

In a customer installation, the MGCP voice gateway is connected to the PSTN via an E1 voice circuit.
Lately, without any reboot, it loses the clocking setting.
The E1 controller setting changes from "clock source line primary" to "clock source line ".
This happened twice this week. We checked the cnf.xml configuration file on the TFTP server and looks ok
<lineCoding>HDB3</lineCoding><framing>CRC4</framing><clock>External-Primary</clock><InputGain>0</InputGain>
Is it possible that the provider makes a change and this forces the gateway to make a configuration change on its own?

When this happens, we manually reboot the gateway and everything is back to normal.

Thank you.

[Elliot Dierksen]

That sounds like something in the config in CUCM doesn't match the hardware that is physically in the gateway. If the config doesn't change frequently (which it probably doesn't), you could add "no ccm-manager config" to the gateway which would stop it from downloading a new config. That does mean that you would have to reboot it or do a "no mgcp", "mgcp" to reset the gateway.

[b.winter]

How is the MGCP endpoint configured in CUCM?

Maybe it is overwriting your manual GW config everytime you do a reset in CUCM.

As @Elliot Dierksen said, you can prevent that with the mentioned command.