Hi All,

I have the the openVFX service from Xnet and I seem to be getting audio problems intermittently,

My DSL is DMZ'd to my asterisk box, and the firewall is set to just allow any incoming connection from the WXC server (58.28.20.150) and sip/ssh/rtp from anyone (minus a couple of IP blocks from spammers), and anything outgoing is allowed

The system was working perfectly however one day the outgoing audio to WXC just stopped working, Extension to Extension worked fine, and Extension to the Echo service in asterisk worked fine, calls via WXC would dial/ring and I could hear the person, but they could not hear me. even after I changed the dial plan so all incoming calls answered and echoed, I still had no audio.

This also happened a few weeks ago and came right the next day (after a call to wxc tech support who said nothing was wrong) but now this time it doesn't seem to be fixing itself...

Anyone else experience this problem? currently it is working fine after setting up my PAP2T to go direct to WXC

I am running Linux 2.6 with Asterisk 1.6.2 and I have hand made/clean configs (no gui's etc)
I have 1x line registered with Xnet, and 4 SIP extensions, Asterisk is on a separate DSL to the 4x extensions

Naturally this is frustrating so any leads with this would be appreciated,

Regards,
Blair

My SIP/RTP configs are:

/etc/asterisk/sip.conf
[general]
port=5060
bindport=5060
dtmfmode=rfc2833
disallow=all
allow=ulaw
allow=alaw
allow=gsm
nat=yes
qualify=yes
registertimeout=1200
regseconds=1800
allowguest=no
alwaysauthreject=yes
localnet=10.1.1.0/255.255.255.0
externip=[my public ip]
context=guestincomming
allowoverlap=no
canreinvite=yes

register = [my vfx registration]

[VFX]
type=peer
fromuser=[my number]
host=pan.wxnz.net
insecure=invite,port
canreinvite=yes
secret=[my password]
username=[my username]
context=incomming

[601]
type=peer
host=dynamic
secret=[ext password]
context=usersall
mailbox=601@default

[602]
type=peer
host=dynamic
secret=[ext password]
context=usersall
mailbox=601@default

... (2 more extensions)

/etc/init.d/rtp.conf
[general]
rtpstart=35384
rtpend=37384