Avaya CM crosstalk with PSTN calls
 

Hi,
We have Avaya G450 with S8300 and two MM711 modules in a site. There are 07 PSTN lines connected in one MM711 module and the communication manager is configured with basic inbound outbound calling. The client sometime face cross-talk with PSTN calls, for example Phone A is already talking on PSTN line and Phone B tries to get outside line by pressing 9 it will get the same line Phone A already connected on. This problem is random and occurs with around 20% of the outbound calls. Please help me figure out the problem.

Thanks,
Anees

Cross Talk
 

Please provide version details...Also is the Analog trunks "loop start" or "ground start" configured

Hi,

Thanks for the reply; following is the CM version details and the analog trunk is "loop start". Please let me know if you need anything further.

Current template installed: CM_onlyEmbed 6.2.0.0.3086 (cm 06.2-02.0.823.0, utility_server 6.2.0.0.15)

response
 

Are your mm modules/gateway on the latest firmware for your release ?

Have you had a look at the "show faults" command from the cli of the gateway?

Does CM show any errors or alarms relating to this ?

If you run a list trace when this happens does it actually show the behaviour you describe ( accessing a line that is already in use) , this would be easily identified using the "status station"(station on active call) and "list trace" (station trying to call out) , multiple sat session can be achieved with a programme such as putty/tutty.

I would try this trouble shooting first and post back your findings

Hi,

thanks for the reply:
mm modules/gateway are not on latest firmware. (do you want me to upgrade to latest?)

no faults in gateway cli.

no errors or alarms on CM.

The problem is very rare I tried to capture list trace before but couldn't simulate problem even after several calls, I will try to simulate problem again tomorrow.

Thanks.

I would certainly get the Gateway and MM Cards on the latest firm ware and then run the tests.