I’m trying to configure my Asterisk machine to work with Vitelity‘s vMobile service. I can place calls to the vMobile device and it rings as expected. However, I have no audio in either direction. There’s no NAT involved though. My asterisk machine has a public IP address with port 5060 and the full range of RTP ports open. (It does have a second NIC and some SIP clients on the private side but I’m not using those for my testing.)

Here’s the relevant parts of my SIP. Anyone see any obvious problems? Not much documentation around on vMobile. I’d love to see a working config if someone has one. Thanks!

[general]
nat=no
externaddr=my_public_ip
localnet2.168.1.0/255.255.255.0
register => username:secret@inbound23.vitelity.net:5060
bindaddr = 0.0.0.0
srvlookup=yes alwaysauthreject=yes
transport=udp
directmedia=no
allowguest=no

; Vitelity vmobile SIP user
[my_did_here]
type=friend dtmfmode=rfc2833
host=my_did_here.mobilet100.sipclient.org
context=vmobile-out
defaultuser=my_did_here
fromuser=my_did_here
trustrpid=yes
sendrpid=no
secret=super_secret_password
disallow=all
allow=ulaw,g726,gsm