Sip 491

Sip 491. Call disconnect after SIP/20 491 Request Pending I have a weird problem with pstn mobile calls going to voicemail We have a CUBE between Telco SBC and Cisco CallManager When ExtensionA calls PSTN mobile and forwarded to voicemail there is a 45 seconds silence and then the call is getting disconnected The CUBE doesn&#39t seem to be sending.

Next message [Sipimplementors] 491 response code handling Messages sorted by [ date ] [ thread ] [ subject ] [ author ] In addition rfc6337 might be of helpful (offeranswer issues) If UA2 expects reINVITE instead of UPDATE then 491 is not the correct response code.

[Sipimplementors] How to resolve 491 request pending cross

SIP/20 491 Request Pending Hi guys I&#39m facing outbound issue right now Kindly need your assistance This is the flow IP Phone > CUCM > SIP Trunk > CUBE > SIP Trunk > ITSP > Mobile phone So I made a test call to my phone it rings 3 times After that it gives silence for 5 seconds.

Solved: SIP/2.0 491 Request Pending Cisco Community

The initial invite comes into Lync and connects the call no problem The second one reaches the Lync mediation server (that now contains the originating caller details) but then Lync send back the 491 We are currently running V9 but upgrading to V11 as well right now Both are PRI integration to the PBX.

Call disconnect after SIP/2.0 491 Request Pending Cisco

The Session Initiation Protocol (SIP) is a signalling protocol used for controlling communication sessions such as Voice over IP telephone callsSIP is based on request/response transactions in a similar manner to the Hypertext Transfer Protocol (HTTP).