05-31-2017 05:17 AM - edited 03-17-2019 06:53 PM
Hi,
Our phones are registered to CUCM. and SIP trunk is configured from CUCM to third party PBX (Huawei).
When cucm registered phone makes external calls it will go to huawei pbx then to PSTN (ISDN PRI is terminated on Huawei PBX)
Phone A ---> CUCM ---> Huawei ---> PSTN
We are getting a ring back tone, but its quiet different from the normal ring back which we use to get when dialing external calls.
Ring back which we are getting now is usually for internal calls (extension to extension).
Any idea how we can change this behaviour ??
Regards,
Faizan.
05-31-2017 05:26 AM
Hi Faizan,
Are you saying the you can hear ringback but it sounds different for external calls?
JB
05-31-2017 05:29 AM
Hi Jitender,
yes, I can hear ringback but its same when for internal as well as external calls.
05-31-2017 05:35 AM
Hi Faizan,
from CUCM perspective you can not change it, you would have to make changes to the PDX.
JB
05-31-2017 05:43 AM
Hi Jitendra,
When CUCM is connected to h323 gateway, it was working fine.
When we changed to SIP, we are facing this issue.
I tried connecting CME to Huawei gateway via SIP, and its perfectly fine.
Does Media resource group have any involvement here ??
05-31-2017 05:51 AM
Hi Faizan,
So i am assuming we are getting ringback from far end, either PSTN or PDX. Are you getting 180 ringing or 183 session progress from PSTN\PBX.
JB
05-31-2017 09:51 AM
05-31-2017 05:52 AM
I am not sure if I understood. Are you facing this issue after changing a H323 gateway to SIP or are you talking about different equipments?
05-31-2017 05:59 AM
Hi Gilmar,
I think he might have added 3rd party PDX as h323 gateway to CUCM and not he has replaced it with SIP trunk.
Faizan, please correct me if i am wrong.
JB
05-31-2017 09:49 AM
Hi Gilmar/Jithendra,
Earlier we were using cisco as5300 as voice gateway, which was configured as H323 gateway in CUCM and was working fine with out any issues.
Later we replaced cisco as5300 with Huawei PBX which is configured as SIP trunk. And facing ringback issues as mentioned above.
Hope this clarifies.
05-31-2017 05:29 AM
Hello Faizan
When you send a call from CUCM to a Voice Gateway, you need to select the cptone type (under voice-port configuration) to select the type of the ring back based on the especific country.
I think you will need to find in the PBX documentation how to do the same.
Regards,
Gilmar Silva
05-31-2017 05:41 AM
Hello Gilmar,
Voice gateway is not cisco, I contacted huawei support for the same to check settings in their PBX. Nothing to do from their side.
05-31-2017 05:47 AM
This is not a good news.
In fact, it is possible that the PBX not support many different tones, so, you may not be able to change this behavior. As Jitender said, you cannot change it in CUCM.
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