SIP in higher education

[Steve Blair <>]

Candace:

 The current versions of Cisco SIP software for 79x0 series phones
does use SRV records as a first choice for how to resolve the proxy
name into an IP address. I'm not sure if this is settable on the 79x0
but it is on other Cisco devices.

-Steve



Candace Holman wrote:

> Thanks Venky, Joseph, and others from Avaya.  Although there is no way 
> to change the domain and realm on the Cisco endpoint, I did get it to 
> register after changing the proxy address from the address of the sip 
> proxy to the address of the domain. 
>
> This may seem like a strange question - how is the phone getting the 
> address of the sip proxy in order to register?  Is it from the SRV 
> record in DNS?
>
> Candace
>
> At 11:56 PM 1/21/2005, Venkatesh Krishnaswamy wrote:
>
> > Candace,
> > Please see below for why you might be seeing the registration problem.
> >
> > Venky Krishnaswamy
> > Director, IP Communications Research,
> > Avaya Labs, Avaya Inc.
> > Lincroft, NJ 07738
> >
> >  
> > <mailto:>
> >
> > -------- Original Message --------
> > Subject: RE: [Fwd: [sip.edu] Cisco 7960 and Avaya CCS 2.1 
> > registration problem]
> > Date: Fri, 21 Jan 2005 23:42:51 -0500
> > From: Mastrogiulio, Joseph (Joseph) <> 
> > <mailto:>
> > To: Krishnaswamy, Venkatesh (Venkatesh) <> 
> > <mailto:>, Walker, William J (William) <> 
> > <mailto:>
> > CC: Zenner, Hal B (Hal) 
> > <>
> >  
> > <mailto:>
> >
> >
> > Venky,
> >
> >  
> >
> > The registration is failing because the proxys domain and realm is 
> > harvard.edu, and the endpoint is registering into the 
> > mysipserver.harvard.edudomain.  Notice that in the WWW-Authenticate 
> > header of the 401 response from the proxy the realmand domainvalues 
> > are both set to harvard.edu.  This tells me that the proxy is 
> > configured with harvard.eduas domain and realm.  The REGISTER request 
> > from the endpoint specifies a mysipserver.harvard.eduas the domain.  
> > The mismatch in domains is causing the registration to fail.
> >
> >  
> >
> > Make sure that the endpoint is configured with the same domain and 
> > realm as the proxy.  Also, make sure that the CCS user and the phone 
> > are configured with the same password.  However, this particular 
> > registration would fail because of domain mismatch.  So, reconfigure 
> > the endpoint with harvard.edudomain and realm and the registration 
> > should succeed.
> >
> >  
> >
> > Joseph
> >
> >  
> >
> >  
> >
> > -----Original Message-----
> > *From:* Krishnaswamy, Venkatesh (Venkatesh)
> > *Sent:* Thursday, January 20, 2005 5:08 PM
> > *To:* Walker, William J (William); Mastrogiulio, Joseph (Joseph)
> > *Cc:* Zenner, Hal B (Hal)
> > *Subject:* [Fwd: [sip.edu] Cisco 7960 and Avaya CCS 2.1 registration 
> > problem]
> >
> >  
> >
> > Bill, Joseph:
> > I came across this in the SIP.edu mailing list. Is the configuration 
> > that they're talking about supported? If so - any idea what the 
> > problem could be?
> > Venky
> >
> >
> > -------- Original Message --------
> >
> > *Subject:
> > *
> >
> > [sip.edu] Cisco 7960 and Avaya CCS 2.1 registration problem
> >
> > *Date:
> > *
> >
> > Thu, 20 Jan 2005 16:36:57 -0500
> >
> > *From:
> > *
> >
> > Candace Holman <> 
> > <mailto:>
> >
> > *Reply-To:
> > *
> >
> >
> >  
> > <mailto:>
> >
> > *To:
> > *
> >
> >
> >  
> > <mailto:>
> >
> >  
> >
> > Hi,
> >
> >
> >
> >
> >
> > I'm getting errors trying to register a Cisco 7960, firmware P0S3-06-3-00 
> >
> >
> > with an Avaya CCS, version 2.1.0.0-35   There's a continuing auth 
> >
> >
> > problem.  The exchange of messages is listed below.  Does anyone see the 
> >
> >
> > problem here?
> >
> >
> >
> >
> >
> > <REGISTER sip:mysipserver.harvard.edu SIP/2.0
> >
> >
> > Via: SIP/2.0/UDP myphoneipaddr:5060;branch=z9hG4bK29d84d0b
> >
> >
> > From: 
> > sip:
> >  
> > <>
> >
> >
> > To: 
> > sip:
> >  
> > <>
> >
> >
> > Call-ID: 
> >
> >  
> > <mailto:>
> >
> >
> > CSeq: 227 REGISTER
> >
> >
> > User-Agent: CSCO/6
> >
> >
> > Contact: 
> > <sip:80550@myphoneipaddr:5060>
> >
> >
> > Content-Length: 0
> >
> >
> > Expires: 3600
> >
> >
> >
> >
> >
> > > , length=<357>
> >
> >
> >
> >
> >
> > <SIP/2.0 401 Unauthorized
> >
> >
> > From: 
> > sip:
> >  
> > <>
> >
> >
> > To: 
> >
> >
> > sip:;tag=2C520912BDEF99F3DFFAD3DE1F6F188A110625677410312
> >  
> > <;tag=2C520912BDEF99F3DFFAD3DE1F6F188A110625677410312>
> >
> >
> > Call-ID: 
> > 003094c3-18c20002-237f53c2-2ff10850@myphoneipaddr
> >
> >
> > CSeq: 227 REGISTER
> >
> >
> > Via: SIP/2.0/UDP myphoneipaddr:5060;branch=z9hG4bK29d84d0b
> >
> >
> > Content-Length: 0
> >
> >
> > WWW-Authenticate: Digest 
> >
> >
> > realm="harvard.edu",domain="harvard.edu",nonce="MTEwNjI1Njc3NDpTREZTZXJ2ZXJTZWNyZXRLZXk6MTUzMzk0MDgxNw==",algorithm=MD5
> >
> >
> > Server: Avaya Converged Communications Server
> >
> >
> > Organization: harvard.edu
> >
> >
> >
> >
> >
> > > , length=535
> >
> >
> >
> >
> >
> > <REGISTER sip:mysipserver.harvard.edu SIP/2.0
> >
> >
> > Via: SIP/2.0/UDP myphoneipaddr:5060;branch=z9hG4bK4f5a0744
> >
> >
> > From: 
> > sip:
> >  
> > <>
> >
> >
> > To: 
> > sip:
> >  
> > <>
> >
> >
> > Call-ID: 
> > 003094c3-18c20002-237f53c2-2ff10850@myphoneipaddr
> >
> >
> > CSeq: 228 REGISTER
> >
> >
> > User-Agent: CSCO/6
> >
> >
> > Contact: 
> > <sip:80550@myphoneipaddr:5060>
> >
> >
> > Authorization: Digest 
> >
> >
> > username="80550",realm="harvard.edu",uri="sip:mysipserver.harvard.edu",response="cb7a0f964021ad9d60c5e312e887b17a",nonce="MTEwNjI1Njc3NDpTREZTZXJ2ZXJTZWNyZXRLZXk6MTUzMzk0MDgxNw==",algorithm=MD5
> >
> >
> > Content-Length: 0
> >
> >
> > Expires: 3600
> >
> >
> >
> >
> >
> > > , length=<571>
> >
> >
> >
> >
> >
> > <SIP/2.0 500 Internal Server Error
> >
> >
> > From: 
> > sip:
> >  
> > <>
> >
> >
> > To: 
> >
> >
> > sip:;tag=2C520912BDEF99F3DFFAD3DE1F6F188A110625677410314
> >  
> > <;tag=2C520912BDEF99F3DFFAD3DE1F6F188A110625677410314>
> >
> >
> > Call-ID: 
> > 003094c3-18c20002-237f53c2-2ff10850@myphoneipaddr
> >
> >
> > CSeq: 228 REGISTER
> >
> >
> > Via: SIP/2.0/UDP myphoneipaddr:5060;branch=z9hG4bK4f5a0744
> >
> >
> > Content-Length: 0
> >
> >
> > Organization: harvard.edu
> >
> >
> > Server: Avaya Converged Communications Server
> >
> >
> >
> >
> >
> > > , length=398
> >
> >
> >
> >
> >
> >
> >
> >
> > =====================================================================
> >
> >
> > Candace Holman
> >
> >
> > 617-384-6665
> >
> >
> >
> >
> >
> > Harvard University Information Systems
> >
> >
> > 60 Oxford Street
> >
> >
> > Cambridge, MA 02138