Bri D channel Down on RTMT

[c.rodriguezesteban]

Hi, I was trying to figure out one way to see if i have a D channel down but on a Bri line, since the canned alert just reflect the D channel down on the PRI lines, at least on my system

I am running a cucm 7.0 with rtmt 7 and a cm 4.2 and rtmt 4.1, and i have several SRST gateways with endpoints registered on both clusters, so far i have to connect to the gateways to check that the BRIS are up, but i was looking for to generate an alert.

Any idea?

thanks

Cesar

[antyeung]

Is the BRI configured as an MGCP endpoint or is it using H.323? If MGCP, there may be some caveats in CUCM for it to work-

https://supportforums.cisco.com/docs/DOC-5036

I've also seen some issues where some devices or switches that the BRI was connected to used a power-save feature that would deactivate L1. From the Cisco's point of view it would view it as down and out-of-service. If the power-save feature is being used you could only use H.323, in which case you wouldn't be able to monitor the D-ch from RTMT AFAIK.

http://www.cisco.com/en/US/tech/tk801/tk379/technologies_configuration_example09186a0080093d4a.shtml

"In some European countries (such as, Belgium and Holland), the usual       practice is that the Telephone Company (Telco) disconnects ISDN Layer1 when the       BRI line has not been active for a certain period, due to power save reasons."

[c.rodriguezesteban]

Hi actually its MGCP, so i will go through the caveats

Actually i have a few bri channels down, but the phisical layer its up, and i want to monitor that because i am in Europe, Spain, and we are having the same channels disconnected again and again, they are used for srst, so i have to connect everyday to see that they are still up, i believe thats is more a saving money issue from the telco that energy.

anyway i have h323 gsm gateways, not being monitoriced, but i though that is because the h323 gateways doesnt register with the CUMC

I can see the calls going through, but i dont receive information about the state of the channels, this should be this way or im doing anything wrong?

Thanks a lot

Cesar

[antyeung]

So currently your have BRI circuits that are configured for MGCP and periodically you notice the provider take down the circuits intentionally?  If that's the case I would switch the BRI's to H.323 since CUCM would not route the calls to the BRI if it views it as down. You would also need to add this command as well-

http://www.cisco.com/en/US/docs/ios/12_3t/voice/command/reference/vrht_d1_ps5207_TSD_Products_Command_Reference_Chapter.html#wp1459139

dial-peer outbound status-check pots

Back to your initial question - I don't have RTMT up but if the BRI circuits are configured for MGCP there should be a counter that you can monitor in RTMT for the status of the BRI channels.