[Asterisk-Users] IAX2 Max Retries dropped calls Firefly

[Paul Redstone]

Hi

We've recently set up and are using with success 1.0.7 using a Junghanns 
quadbri card to BRI ISDN, and Firefly with IAX2 protocol as softphones Works 
very well, however we're getting cases where sometimes the call just drops.

>From setting more verbose modes we get a log which is shown below. The problem 
seems to be the maxretries message which comes from chan_iax2. We are using 
Firefly 1.9.8 build 3945.

However I cannot work out what this message means. There is some suggestion in 
when it occurs that it might  be an IP connection issue from the softphone to 
the asterisk box. Connection is in one office via 100 M switches, very simple 
direct path. Firefly running Windows XP SP2.

We're planning to try another softphone but quite like Firefly.

Can anyone advise on this?

Thanks

Paul

===========
Log extract


    -- Hungup 'Zap/1-1'
  == Spawn extension (bodiam, NNNNNNNNNN, 1) exited non-zero on 'IAX2/353 at 353/
10'
    -- Hungup 'IAX2/353 at 353/10'
    -- Registered '355' (AUTHENTICATED) at XXXXXXXXXXXX
    -- Registered '354' (AUTHENTICATED) at XXXXXXXXXXXX
    -- Accepting AUTHENTICATED call from XXXXXXXXXXXX requested format = 1024
, actual format = 1024
    -- Executing Macro("IAX2/354 at 354/11", "bodiam-iaxsip|352|IAX2/352") in new 
s
tack
    -- Executing Dial("IAX2/354 at 354/11", "IAX2/352|20|tT") in new stack
    -- Called 352
    -- Call accepted by XXXXXXXXXXXX (format ilbc)
    -- Format for call is ilbc
    -- IAX2/352/15 is ringing
    -- IAX2/352/15 answered IAX2/354 at 354/11
    -- Attempting native bridge of IAX2/354 at 354/11 and IAX2/352/15
May 17 11:47:56 WARNING[2763]: chan_iax2.c:1480 attempt_transmit: Max retries 
ex
ceeded to host XXXXXXXXXXXX on IAX2/354 at 354/7 (type = 6, subclass = 2, ts=3800
76, seqno=66)
May 17 11:47:56 WARNING[2763]: chan_iax2.c:1480 attempt_transmit: Max retries 
ex
ceeded to host XXXXXXXXXXXX on IAX2/354 at 354/7 (type = 6, subclass = 11, ts=380
079, seqno=67)
    -- Hungup 'Zap/2-1'
  == Spawn extension (bodiam, NNNNNNNNNN, 1) exited non-zero on 'IAX2/354 at 354/
7'
    -- Hungup 'IAX2/354 at 354/7'
    -- Hungup 'IAX2/352/15'
  == Spawn extension (macro-bodiam-iaxsip, s, 1) exited non-zero on 
'IAX2/354 at 354/11' in macro 'bodiam-iaxsip'
  == Spawn extension (bodiam, 352, 1) exited non-zero on 'IAX2/354 at 354/11'
    -- Hungup 'IAX2/354 at 354/11'