[Asterisk-Users] Does SIP work?

[Andrew Kohlsmith]

> Now that I've been unable to register 2 hardware SIP phones and one
> software (Kphone), I'm beginning to doubt that chan_sip works at all.

I use SIP to talk to Grandstream 100s every day, and also to the FWD network 
without issue.  Are you trying to access SIP across NAT or other 
restrictive firewall or something?

Regards,
Andrew