Is it possible to place a SIP call to a SIP/SCCP endpoint that is registered with CCM from a SIP softphone (that is not registered with CCM). Basically, I am just trying to dial a SIP URI to call a phone that is registered with CallManager.
For example, I am trying to use a Linux-based softphone - Ekiga - to dial sip:email@example.com. 50956 is an extension assigned to a Linksys SIP phone that is registered to CCM 10.244.2.10. Ekiga is not registered with CCM.
Whenver I try do dial this URI, Ekiga sends a SIP INVITE to CCM UDP port 5060, which then responds with:
SIP/2.0 503 Service Unavailable
I have also had the same result with the SIP cli-based testing tool sipsakk.
Does anyone know how to make this work?
If so, can I also dial SCCP endpoints via a SIP URI (and the B2BUA functionality in CCM will handle the SIP/SCCP signaling)?
I have been playing around with CCM 5.1 for a few weeks but have been unable to find any documentation about this.
I would like to be able to receive SIP calls from anyone on the Internet (like the Cisco SIP Proxy Server permitted before it went EOS).
I know that a second part of this is to setup a SIP SRV record for my domain so that sip:firstname.lastname@example.org works. Right now I am just trying to see if I can get CCM 5 to redirect a SIP INVITE from a softphone to a phone that is registered with callmanager.
Does CCM 5 even support URI-based dialing (sip:email@example.com), or just ENUM dialing (where DNS would need to be configured to support ENUM with a NAPTR record like 18.104.22.168.22.214.171.124.9.9.1.e164.arpa to dial 19995551234)?
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