The Digital Acoustics Intercom System is currently not compatible with the OnSIP hosted PBX service.

The issue is that the administration software currently does not allow the speaker to register with an Authorized Username which differs from Address of Record (AOR) Username. As you can see in the trace below when the SIP device responds to the 401 challenge, the authorization digest supplants the AOR Username where OnSIP requires a different entry to register and function.

Per the Digital Acoustics Project Management, the request for the ability to input independent information for the authorization Digest is forthcoming. We will be keeping an eye on this product for retesting.

Here is a trace of the registration attempt (the problem is in bold):

2011-12-08 16:08:40.412120
38.104.167.182:32199 -> 66.227.100.25:5060

REGISTER sip:example.onsip.com SIP/2.0
Via:SIP/2.0/UDP example.onsip.com:5060;branch=z9hG4bK5f86917489e789a8997d2cc1b6f2ce87;rport
Max-Forwards: 70
Contact: Speaker<sip:eric.13@example.onsip.com:5060>
To: "Speaker"<sip:eric.13@example.onsip.com>
From: "Speaker"<sip:eric.13@example.onsip.com>;tag=1b16da6b31cddc28a049660faba6ca6c
Call-ID: 1b16da6b31cddc28a049660faba6ca6c
CSeq: 129 REGISTER
Expires: 1800
User-Agent: Digital Acoustics SIP Console EE Gateway Version 2.0.3.1
Allow: INVITE, OPTIONS, ACK, BYE, REFER, CANCEL
Content-Length: 0
_________________________________________________________________________________

2011-12-08 16:08:40.412994
66.227.100.25:5060 -> 38.104.167.182:32199

SIP/2.0 401 Unauthorized
Via: SIP/2.0/UDP example.onsip.com:5060;received=38.104.167.182;branch=z9hG4bK5f86917489e789a8997d2cc1b6f2ce87;rport=32199
To: "Speaker"<sip:eric.13@example.onsip.com>;tag=75d09fb22ceadb40012c6e771a69dc74.562e
From: "Speaker"<sip:eric.13@example.onsip.com>;tag=1b16da6b31cddc28a049660faba6ca6c
Call-ID: 1b16da6b31cddc28a049660faba6ca6c
CSeq: 129 REGISTER
WWW-Authenticate: Digest realm="jnctn.net", nonce="4ee0e1260000e22260a5c1cab3bc31494c1fde675a66fc29", qop="auth"
Server: OpenSIPS (1.5.3-notls (x86_64/linux))
Content-Length: 0
_________________________________________________________________________________

2011-12-08 16:08:40.462021
38.104.167.182:32199 -> 66.227.100.25:5060

REGISTER sip:example.onsip.com SIP/2.0
Via: SIP/2.0/UDP example.onsip.com:5060;branch=z9hG4bK071f3c6e1706c68adedd434657754761;rport
Max-Forwards: 70
Contact: Speaker<sip:eric.13@example.onsip.com:5060>
To: "Speaker"<sip:eric.13@example.onsip.com>
From: "Speaker"<sip:eric.13@example.onsip.com>;tag=1b16da6b31cddc28a049660faba6ca6c
Call-ID: 1b16da6b31cddc28a049660faba6ca6c
CSeq: 130 REGISTER
Expires: 1800
Authorization: Digest username="eric.13",realm="jnctn.net",nonce="4ee0e1260000e22260a5c1cab3bc31494c1fde675a66fc29",qop=auth,nc=00000003,cnonce="e6e29ebd72d3920a91914fb2cf8f494d",response="058f4a3692b5a0ad0b15e821bbb32b54",uri="sip:example.onsip.com",algorithm=MD5
User-Agent: Digital Acoustics SIP Console EE Gateway Version 2.0.3.1
Allow: INVITE, OPTIONS, ACK, BYE, REFER, CANCEL
Content-Length: 0
_________________________________________________________________________________

2011-12-08 16:08:40.463089
66.227.100.25:5060 -> 38.104.167.182:32199

SIP/2.0 403 Forbidden
Via: SIP/2.0/UDP example.onsip.com:5060;received=38.104.167.182;branch=z9hG4bK071f3c6e1706c68adedd434657754761;rport=32199
To: "Speaker"<sip:eric.13@example.onsip.com>;tag=75d09fb22ceadb40012c6e771a69dc74.356e
From: "Speaker"<sip:eric.13@example.onsip.com>;tag=1b16da6b31cddc28a049660faba6ca6c
Call-ID: 1b16da6b31cddc28a049660faba6ca6c
CSeq: 130 REGISTER
Server: OpenSIPS (1.5.3-notls (x86_64/linux))
Content-Length: 0

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