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Beginner

Cannot transfer calls between two analog pbx extensions via cisco Phone

Hi All,

Calls from Analog PBX to CUCM Cisco phone cannot transfer back to another analog extension in same PABX (no voice)

Exten 1 (PABX A)--->Cisco Phone (CUCM)--> Extension 2 (PABX A)

Exten 2 can pick the calls originating from exten1 and transfer via Cisco phone but call connected with no voice.

Exten 1 (PABX A)--->Cisco Phone (CUCM) ----OK

Cisco Phone (CUCM)--> Extension 2 (PABX A) ---OK

Exten 1 (PABX A)--->Cisco Phone (CUCM)--> Extension 2 (PABX A) --- No voice between ext1 and ext 2.

 

Need help to resolve this.

Thanks.

3 REPLIES 3
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Frank, follow some questions

Frank, follow some questions

 

How PBX are connected?

Is there a trunk between then?

 

Which manufacturer is?

 

Please check if you have MTP configured.

Beginner

Hi Divina,PBX configured via

Hi Divina,

PBX configured via sip trunk and manufacture is Teltronics.

I didn't checked MTP required on trunk configuration and want to know how to configure MTP.

Thanks.

Highlighted

Frank, please follow this

Frank, please follow this guide. 

 

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/8_5_1/ccmsys/accm-851-cm/a05mtp.html

 

At Device > Gateway you need to enter your gateway (that is the other PBX) and see if media termination point required option is checked.

 

 

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