asterisk users - Jul 2007 - Not hearing the caller after 2 x Flash

Me again, another problem.
As I said before, I have 2 lines going into "incoming" context.

When client calls, I press Flash, client hears music on hold (only on
voip line as said in previous post), when I get back and press Flash
again to get back to my client I cannon hear him, but he hears me
without problems.

I have just tested in on the LAN, same situations, happens everytime.

    -- Executing [113 at firma:1] Dial("SIP/zytek-087a2000",
"SIP/113|720|Ttm") in new stack -- Called 113
    -- Started music on hold, class 'default', on channel
'SIP/zytek-087a2000' -- SIP/113-087a7000 is ringing
    -- SIP/113-087a7000 answered SIP/zytek-087a2000
    -- Stopped music on hold on SIP/zytek-087a2000
    -- Started music on hold, class 'default', on channel
'SIP/zytek-087a2000' -- Stopped music on hold on SIP/zytek-087a2000
  == Spawn extension (firma, 113, 1) exited non-zero on
'SIP/zytek-087a2000'

Asterisk 1.4.7.1

Maybe dtfm ? My gateway in on rfc, office is on info, but problems are
same here and there.

-- 
.: Jakub G?azik,
.: email & jabber: zytek<at>nuxi.pl

Dnia 2007-07-17, o godz. 14:06:42
Jakub G?azik <zytek-lists at nuxi.pl> napisa?(a):


> When client calls, I press Flash, client hears music on hold (only on
> voip line as said in previous post), when I get back and press Flash
> again to get back to my client I cannon hear him, but he hears me
> without problems.
No ideas?

I have switched voip gateways (grandstream), phones but the problem
still exists. I phone from LAN to LAN, when I press Flash and then press
againg - I cannon hear the caller, but he hears me.

Please post suggestions what is wrong with my setup.

I will buy SIP hardphones and test this issue again.

-- 
.: Jakub G?azik,
.: email & jabber: zytek<at>nuxi.pl