Presence and IntComm WG

[Steve Blair <>]

 Has anyone thought about the impact of domain names on
SIP routing, especially inter-institution?

 I noticed that eyebeam, and others, append the locally configured
SIP domain name to an outgoing "called number". This is fine
if that domain name is "resolvable". What happens when local
SIP proxies, SIP.edu proxies and now the PALs proxy all
interact?

 During the test call with Candace I noticed some missed calls
to 

 and outbound calls had this same domain
name appended. This domain name is not resolvable.

 Our SIP.edu domain is trying to follow the architectural direction
of using <userid>@<institution-name>.edu. Our VoIP proxy is
known by yet another domain and PALs uses my email address.

  I know we can use the alias command in SER to handle domain
names as long as userids are understood. I am just curious what
others think about this issue?

-Steve