Caller button not registering to SIP server

[GoogleCodeExporter]

What steps will reproduce the problem?
Using a Zultys IPBX a SIP trace shows the invite coming from the Caller client, 
however the caller client never successfully registers to our server -- could 
this be from an inadequate registration timeout?

Other success with Zultys? Epygi? 

What is the expected output? What do you see instead?
8/9/2013     10:34:18 AM     Notice     Call attempt rejected because a device 
or SIP server is not authorized: Contact 
'sip:BlendCenterCaller@188.165.231.30:10060', IP 188.165.231.30:10060

What version of the product are you using? On what operating system?
Latest click2dial

Please provide any additional information below.

Original issue reported on code.google.com by vgrav...@gmail.com on 9 Aug 2013 at 3:52

[GoogleCodeExporter]

This is how a click-to-call service works: Making calls without sending 
REGISTER messages. The authentication is done by challenging the INVITE.
If you have to register to make calls then, what you need is a softphone like 
http://sipml5.org/call.htm

Original comment by boss...@yahoo.fr on 9 Aug 2013 at 4:02

• Changed state: Invalid

[GoogleCodeExporter]

Thanks, very fast response. 

My IPPBX does not accept this kind of authentication -- is there a gateway 
device or software that I might be able to place on my end to accept the 
request from the Caller Account and forward to my PBX?
maybe a SPA ATA or something like that? -- something I can register to my PBX 
as a static device?

Original comment by vgrav...@gmail.com on 9 Aug 2013 at 5:35