asterisk users - Jul 2007 - asterisk 1.4.8 and google talk - no audio

Hi all,

Iam using asterik 1.4.8 and connected to google talk. When iam calling from
my google talk account to sip phone i can hear the voice (2 way).  (this
happens only within the LAN).

when my friend tries to call my asterisk server (connects to the public ip)
using his googletalk client  it comes to my sip phone but either party cant
hear a voice.

I have fully allowd both tcp,udp on my router. and i have a public IP. (no
nat). i have disabled my firewall on my asterisk box (just for testing).

this is my configuration

gtalk.conf

[general]
context=default
allowguest=yes
bindaddr=147.120.203.190
externip=203.xx.xx.xx

[guest]
disallow=all
;allow=alaw
allow=ulaw
context=guest

[google]
disallow=all
allow=ulaw
;allow=alaw
context=default
connection=asterisk

jabber.conf

[general]
debug=yes
autoprune=yes
autoregister=yes

[asterisk]
type=client
serverhost=talk.google.com
username=tharanga12345 at gmail.com
secret=xxxxxx
port=5222
usetls=yes
usesasl=yes
timeout=1000

rtp.conf
iam using lower ports...
rtpstart=1650
rtpend=4560



sip.conf

[general]
context=default
bindport=5060
bindaddr=0.0.0.0
;srvlookup=yes
dtmfmode=rfc2833
relaxdtmf=no
disallow=all
allow=ulaw
;allow=alaw
;allow=gsm
maxexpirey=30
defaultexpirey=180
canreinvite=yes
;nat=no
UserAgent=Asterisk

[312]
type=friend
context=default
regexten=312
username=312
secret=312
fromuser=1
callerid=tharanga
host=dynamic
;nat=no
canreinvite=no
dtmfmode=RFC2833
incominglimit=3
mailbox=1

is this a bug ?? or something missing in my configuration ?.

thxs in advance
Tharanga

       
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