[Asterisk-Users] calling an iaxy

[rich allen]

iH

i have an IAXy which i can make calls from but am unable to call. when 
i dial the extension assigned, i get the following from the console;

     -- Executing Dial("SIP/5801-b665", "IAX2/5899 at 192.168.0.5") in new 
stack
     -- Called 5899 at 192.168.0.5
     -- Call accepted by 192.168.0.5 (format ULAW)
Nov  1 12:28:33 NOTICE[163850]: chan_iax2.c:5546 socket_read: Rejected 
call to 192.168.0.5, format 0x4 incompatible with our capability 
0xff03.
     -- Hungup 'IAX2/5899/1'
   == No one is available to answer at this time


what might i be missing?

thanks
- hcir