The SIP REFER does not work correctly. When the IOS gateway receives a SIP REFER to a number, it att...
The SIP REFER does not work correctly. When the IOS gateway receives a SIP REFER to a number, it attempts a SIP INVITE based on SIP URI from REFER TO rather than the destination as specified by the dial-peer
A call arrives from the Public Switched Telephone Network (PSTN) over the Primary Rate Interface (PRI) to destination 4149854. This matches the dial-peer 204 and is forwarded to the Inter-VSAN Routing (IVR) system (10.54.78.34). This part of the call is delivered successfully.
The IVR system then redirects the call to a new extension (96115) and sends a Session Initiation Protocol (SIP) REFER to the Cisco AS5350 Universal Gateway (10.56.252.11). The gateway accepts the SIP REFER, but then sends a SIP INVITE to itself (10.56.252.11), even though the dial-peer 220 instructs it to forward the call to 10.56.252.10 (another AS5350 gateway).
This is working as designed (WAD). As per the RFC 3515:
Processing a REFER request:
A UA accepting a well-formed REFER request should request approval from the user to proceed (this request could be satisfied with an interactive query or through accessing configured policy). If approval is granted, the UA must contact the resource identified by the URI in the Refer-To header field value.
The RFC explicitly states that SIP UA must contact resource identified in the Refer-To URI. Refer-To URI prescribes protocol, user, host and port.
In this case, The Refer-To in the SIP REFER reads:
Since the release of Cisco IOS 12.3(4)T, the host is referred to from the Refer-To header itself. This is the reason why the triggered INVITE is seen going to 10.56.252.11.
What is mean by configured, can any one share list of Processes with details. vrupim.exe : ucce-PG9B vrupim - pim2 - [CVP_2 CONFIGURED] : 26.08:26:33vrupim.exe : ucce-PG9B vrupim - pim1 - [CVP_1 CONFIGURED] : 26.08:26:33
I'm looking to upgrade to vSphere 6.7. I want to check to see if CUCM 12.0(x) is compatible with the updated version of vSphere. Looking at the matrix compatibility link below, it does not show support for this combination. However, CUCM 11.5 and 12.5 not...
I ran into an issue were callers would receive "I'm sorry, we are currently experiencing system problems" intermittently. I traced the issue down to one agent that somehow we missed turning off the forward to voicemail option on ring no answer. The v...
Hello, our company is currently hiring for a few different positions, one more around UCCE/PCCE as well as Webex Contact Center, and one more around contact center application development. If people would like to learn more, please message me/email me thr...
Hello! Try as I might, I can't seem to find an explanation of the differences between RoomOS and CE software. Currently running an air-gapped on-premises network with multiple CODECs, and are looking to upgrade those devices. But I'm seeing that...