[cisco-voip] Problem transfer call CME 4.0 with trunk SIP

[David Guarnido]

Hi list, 

 

I have this problem:

No ringback occurs on transfer from PSTN calls coming in on IOS gateway.With
Cisco CallManager 4.0 connecting to the PSTN via an SIP gateway, if a call
comes into a phone and it is blind transferred to another phone, the PSTN
side will only receive dead air; ringback does not occur. 

Any solution ??

Thanks in advance,

David 

 

 

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