asterisk users - May 2004 - Probs with oh323 driver: audio only in 1 direction

Hi,

try to setup asterisk as an ISDN2H323-Gateway. The only problem
i have after establishing a call is, that Audio works only from IP to
ISDN-Phone but not from ISDN to IP-Phone.

A known problem ???

Thanks in advance
  Michael

i am using asterisk-cvs, pwlib V1.6.6 (janus), openh323 V1.13.5 (janus) 
and oh323-0.6.0

Here are my config's
##############
# modem.conf #
##############
[interfaces]
context=isdn

driver=i4l

language=en
stripmsd=0
dialtype=tone
mode=immediate

msn=8540340
context=8540340
device => /dev/ttyI0
device => /dev/ttyI1

##################
#extensions.conf #
##################
[general]
static=yes
writeprotect=no

[8540340]
exten => s,1,Wait,1
exten => s,2,Answer
exten => s,3,Dial(OH323/192.168.70.227)

[voip-h323]
exten => s,1,Answer
exten => s,2,Dial,Modem/ttyI1:${OH323_DSTE164}

##############
# oh323.conf #
##############
[general]
listenAddress=192.168.70.1
listenPort=1720
connectPort=1720
tcpStart=10000
tcpEnd=20000
udpStart=10000
udpEnd=20000

fastStart=no
h245Tunnelling=no
h245inSetup=no
inBandDTMF=no
silenceSuppression=no

jitterMin=20
jitterMax=100
ipTos=none
outboundMax=10
inboundMax=10
simultaneousMax=10

wrapLibTraceLevel=1
libTraceLevel=1
libTraceFile=stdout

gatekeeper=192.168.70.1
gatekeeperTTL=600
userInputMode=TONE

amaFlags=default
accountCode=H323
context=voip-h323

[register]
alias=isdn
gwprefix=8

[codecs]
codec=G711A
frames=20

-- 
Michael Niehren              __   _       powered by
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On Tue, May 04, 2004 at 09:30:01AM +0200, Michael Niehren
wrote:
> try to setup asterisk as an ISDN2H323-Gateway. The only problem
> i have after establishing a call is, that Audio works only from IP to
> ISDN-Phone but not from ISDN to IP-Phone.
I can add that it works perfectly from a SIP phone to H.323, but not
from ISDN to H.323. (and it works from ISDN to SIP phone).

My symptom is the same: you can hear H.323 from ISDN, but not hear
ISDN from H.323.

However I use H.323 from asterisk's recent CVS, not oh323. I use
codec GSM in h323.conf.

Logs excerpt:

Failure: (from ISDN)
May  5 09:10:21 DEBUG[23573]: channel.c:1331 ast_indicate: Driver for channel
'CAPI[contr4/8414774]/1' does not support indication 3, emulating it
    -- H323/1.2.3.4 answered CAPI[contr4/8414774]/1
May  5 09:10:21 DEBUG[23573]: rtp.c:1098 ast_rtp_write: Ooh, format changed from
UNKN to GSM

Ok: (from SIP)
May  5 09:10:37 DEBUG[25621]: rtp.c:1098 ast_rtp_write: Ooh, format changed from
UNKN to ULAW
May  5 09:10:40 DEBUG[25621]: channel.c:1331 ast_indicate: Driver for channel
'SIP/17476691152-9ccd' does not support indication 3, emulating it
May  5 09:10:41 DEBUG[25621]: rtp.c:1098 ast_rtp_write: Ooh, format changed from
UNKN to GSM