[cisco-voip] CUCM 6.1 SIP Trunk to Provider

Wed Aug 6 11:17:41 EDT 2008

It does, until you look under the covers.  It will allow you to make outbound calls using these credentials, but inbound calls fail because UCM never syncs and maintains presence details with the sip provider, so the provider always sees your line as offline.  

Cisco is not very interested in fixing this because of the miniscule amount of customers looking for this particular configuration.  Plus, you are limited to one set of credentials and most small SIP providers will give you one set of credentials per line (i.e. viatalk and the like).

Most corporate SIP providers don't use the auth credentials.

From: Philip Walenta [mailto:pwalenta at wi.rr.com] 
Sent: Wednesday, August 06, 2008 11:06 AM
To: Matt Slaga (US); 'Alessandro Bertacco'; 'Cisco Voyp List'
Subject: RE: [cisco-voip] CUCM 6.1 SIP Trunk to Provider

I thought the SIP in 6.1 supported digest auth on trunks?

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From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Matt Slaga (US)
Sent: Wednesday, August 06, 2008 9:33 AM
To: Alessandro Bertacco; Cisco Voyp List
Subject: Re: [cisco-voip] CUCM 6.1 SIP Trunk to Provider

It depends.  Does the provider give you user/pass credentials?  If so, UCM cannot do this, you will need IP2IP gateway inbetween.  If they are giving you a basic SIP trunk with only IP as creds, then most likely you can terminate directly to UCM if they use a compatible dtmf relay.

From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Alessandro Bertacco
Sent: Wednesday, August 06, 2008 9:44 AM
To: 'Cisco Voyp List'
Subject: [cisco-voip] CUCM 6.1 SIP Trunk to Provider

Hi all,

  I'll need to configure a SIP trunk from a CUCM6.1 to an external provider, to route incoming call to a specified Phone.

Someone have already configured CUCM6.1 to do these? I need an Ip to Ip Gateway or not?

Can I use the Voice Gateway instead of IP to IP dedicated Router?

Thank you for your response

Best Regards

Alessandro Bertacco

Da: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] Per conto di Lelio Fulgenzi
Inviato: giovedì 31 luglio 2008 20.37
A: Cisco Voyp List
Oggetto: [cisco-voip] Setting up a SIP trunk...anything special?

I am setting up a SIP trunk to a Cistera appliance (I believe they are using asterisk) in order for the box to dial out. The SIP trunk setup went fine and without incident. Is there anything else I need to do? Someone mentioned to me a while back that I would need something else like a transcoder.

Any pointers would be great.

Thanks,

Lelio
--------------------------------------------------------------------------------
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Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1
(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)
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is not regulation issue for most competitive Manhattan double dutch leagues.

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