CUCM integration with hosted PBX

[aneesh.abraham]

Hi Team,

     one of our customer requires their cucm  (BE6S platform) to integrate with a hosted PBX. the hosted PBX supports SIP trunk and they will provide the server address and credentilas for the SIP trunk.

      Please advise  on the recommended solution here, can I create a SIP trunk on CUCM to communicate the server on should I go for a SBC to connect the server.

Aneesh

[Dennis Mink · Accepted solution]

you would need to deploy a cube. preferrably located in your company's DMZ

[aneesh.abraham]

Thanks Dennis,
Can we use the same 2921 router which comes with the UCS module as the CUBE.

[manpreet1.singh@orange.com]

Hi, 

usually in these a SIP trunk with destination IP address for the PBX should be enough if you are not connecting over internet and there are no implications/requirements on the third party end. 

Regards

Manpreet Singh 

[aneesh.abraham]

thanks Manpreet. The remote system is in internet.

[gourav.646]

I have same situation. I have cube deployed and created SIP-UA in cube to register trunk with provided credentials. While checking logs i see register message is being sent, but in response i am getting 401 unauthorized and then nothing happens. Any input on how to proceed further. 401 response seems to be truncated.

Sent:
REGISTER sip:61.19.18.180:7060 SIP/2.0
Via: SIP/2.0/UDP 10.196.1.75:5060;branch=z9hG4bK113D238C
From: <sip:sip6620268722@61.19.18.180>;tag=104809F3-508
To: <sip:sip6620268722@61.19.18.180>
Date: Thu, 05 Mar 2020 16:59:37 GMT
Call-ID: FFFFFFFFE23CBED0-5BBD11EA-FFFFFFFF8002E58E-FFFFFFFFD4685DC2
User-Agent: Cisco-SIPGateway/IOS-16.9.3
Max-Forwards: 70
Timestamp: 1583427577
CSeq: 2209 REGISTER
Contact: <sip:sip6620268722@10.196.1.75:5060>
Expires: 600
Supported: path
Content-Length: 0

Received:
SIP/2.0 401 Unauthorised
Via: SIP/2.0/UDP 10.196.1.75:5060;branch=z9hG4bK113D238C
CSeq: 2209 REGISTER
WWW-Authenticate: DIGEST realm="VoipSwitch", nonce="f750fb690bc36ab105231106503532609409"
Content-Length: 0
Call-ID: FFFFFFFFE23CBED0-5BBD11EA-FFFFFFFF8002E58E-FFFFFFFFD4685DC2
To: <sip:sip6620268722@61.19.18.180>;tag=2353264149279593
From: <sip:sip6620268722@61.19.18.180>;tag=104809F3-508