Nortel i2004 phones

I did install asterisk with unistim and it’s working fine. I just wanted to share couple things that took me time to figure out:

If you have no sound when you make a call:

  1. Make sure you have RTP ports open, 10000 - 20000 (or ports range in your /etc/asterisk/rtp.conf) in your firewall.
  2. Try play with rtp_method=1 then 2, then 3 in your /etc/asterisk/unistim.conf and see if it fix your issue. Each time you change rtp_method, go to asterisk -r and type unistim reload to apply the configuration then make your call, if you just get the tone in your (where you made the call) phone, you got it.

If your call drops or server unreachable restarting in N seconds shows up, try adding keepalive=60 to unistim.conf instead of keepalive=120 which is the default.