asterisk users - Feb 2004 - sipphone dialing out problem

Hello

when i dial a toll free no using sipphone i get this error message. How do i
solve this?

Any help will be appreciated.


console message:

Starting simple switch on 'Zap/2-1'
    -- Executing SetCallerID("Zap/2-1", "17473863282") in
new stack
    -- Executing SetCIDName("Zap/2-1", "Deepak JV") in new
stack
    -- Executing Dial("Zap/2-1",
"SIP/18006526672@proxy01.sipphone.com") in new stack
    -- Called 18006526672@proxy01.sipphone.com
    -- SIP/proxy01.sipphone.com-8efc is making progress passing it to Zap/2-1
    -- SIP/proxy01.sipphone.com-8efc answered Zap/2-1
Feb  3 22:15:57 NOTICE[1218901440]: channel.c:1481 ast_set_read_format: Unable
to find a path from G729A to ULAW
Feb  3 22:15:57 NOTICE[1218901440]: channel.c:1451 ast_set_write_format: Unable
to find a path from ULAW to G729A
Feb  3 22:15:57 WARNING[1218901440]: chan_zap.c:3728 zt_write: Cannot handle
frames in 256 format
  == Spawn extension (internal, 18006526672, 3) exited non-zero on
'Zap/2-1'
    -- Hungup 'Zap/2-1'


Regards
Deepak
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>>>>> "D_JV" == Deepakumar JV
<jvdeepak@yahoo.com> writes:
D_JV> when i dial a toll free no using sipphone i get this error message.

D_JV> channel.c:1481 ast_set_read_format: Unable to find a path from G729A to
ULAW

sipphone is preferring to use the G729A codec; if they only support
that you will need to buy a g729 license from Digium in order to use
them for those calls.

A better choice may be to use the freenum.org enum service for toll
free calls.  See the list's archives for the details.

-JimC