[Asterisk-Users] HELP: How to configure h323 channel driver ?

[Charles Wang]

Hi, ALL:

I has installed my chan_h323 channel driver in my *.
my scenario is:

SIP UA => SER(mediaproxy) => Asterisk => chan_h323 => GNUGK => H323 EP
And my UA and EP all support codecs such as alaw ulaw & G.729 at least.
I dial from UA behind NAT to H323 EP, and I answer from H323 EP too.
But I can not hear any voice from each side. Can anybody point out why it is?

h323.conf
--------------------------------------
[general]
port = 1720
bindaddr = 0.0.0.0
tos=lowdelay
accountcode = myaccountname
gatekeeper = IP of GNUGK
AllowGKRouted = yes
amaflags=default
type=h323
prefix=888248
e164=88812388888
context=voip323
disallow=all
allow=g729
allow=gsm
allow=alaw
allow=ulaw
allow=g723.1


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

[globals]

[default]
exten => _.,1,Dial(H323/${EXTEN})



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Best Regards
Charles