Hey all I have an old VTA-111 with only H323 (i've emailed for a SIP firmware, still waiting a response.... grrrr....) and have succesfully got it to register and be able to place calls using both the chan_h323 and also chan_ooh323 . BUT.. I have a one way sound problem... I never seem to get transmitted sound back to the H323 device. If I speak from teh H323 to a SIP or ZAP channel it works fine, but I can't even hear system prompts etc etc. Using ooh323 I do hear ringing but thats it. I've restricted codecs right down to just alaw/ulaw/gsm, and it doesn't matter what I specify at the asterisk end or at the client end, using only one of the 3 codecs etc etc, I get the same problem buggered if I know whats going on. Can anyone else suggest what the problem might be ? and does someone perhaps have a SIP firmware to solve my problems another way? -- Adrian Carter Technical Manager Leading Edge Internet Web http://www.lei.net.au http://support.lei.net.au Direct +61 2 6163 6162 Support 1 300 662 415 E-mail cartera@lei.net.au