07-20-2011 11:21 PM - edited 03-16-2019 06:03 AM
Hi Guys,
I have a cisco call manager 4.1 and GSM Bank. The GSM bank is used for calling SMART Mobile phones. Calls from call manager going to SMART is via sip trunk. I encountered some "cannot complete transfer" issue when somebody wants to call SMART from their local extension then transfer and/or making conference call to another number. I am not sure where to look or where to start troubleshooting. I hope somebody helps me on this.
07-20-2011 11:27 PM
Hi,
where do you see the "cannot complete transfer" error? Is it working fine when a basic outbound call from an IP Phone to smart mobile number and only fails when a call is connected and needs to transfer/conference?
07-21-2011 12:06 AM
I saw it on the IP Phone itself. And yes, it only fails when a call is connected and need to be transfered or conference.
Is this a voice codec related issue?
07-21-2011 04:15 AM
Most likely it's an MTP issue, make sure the MTP required is checked on your trunks.
HTH
java
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www.cisco.com/go/pdihelpdesk
07-22-2011 04:06 PM
hi javalenc,
MTP is checked. But same results. here is our call flow.
Cisco IP PHONE(7940/7960) ----> CCM ----> Cisco 7206 ----via sip trunk----> GSM BANK (SMART MOBILE) ----> Call transfer/Conference Call.
07-24-2011 11:13 PM
Hi,
i read this article. Is this somewhat related to my issue?
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