Dear All, I need your advices, all you experts out there, I have spent alot of time testing but just could not get it to work, so I need your assistance please.
I have been trying to passthrough calls with asterisk, that is, receiving calls from customer via VOIP and then directly send the calls out to other VOIP carriers. For example calls to India come in to my asterisk and get routed to Carrier A who is, for example, using a Cisco VOIP gateway to receive my calls and terminate to India. I have 2 problems with passing throughs: 1. Faxing - when calls come into my asterisk, I don't suppose it knows if it is a fax or not, or if there is a way to configure the Asterisk to detect it, how should it be configured? Then the calls to India will go directly back out via VOIP to Carrier A who , for example, uses Cisco VOIP gateways and supports T38 faxing. The problem is that, with this passing through, all faxes become impossible. Another scenario which is NOT a passthrough situation is I have an Asterisk in, for example, New York and another one in, for example, Los Angeles, we tried making faxes from New York from the ZAP channels to Los Angeles, to be terminated via ZAP channels on ISDN circuits. Again, it never works. Ladies and Gentlemen, how should one configure Asterisk to make (a) faxing possible in a passthrough situation with both endpoints cisco and asterisk in the middle and (b) faxing possible with both asterisk as endpoints? 2. Codec negotiation - again in a passthrough situation when both endpoints are non-asterisk, most probably cisco or quintum gateways, I can never allow more than 1 codec, for example, g723 and g729 or with g711. For example, if the terminating endpoint is quintum and allows only g723, the originating endpoint is cisco and it is sending both g723 and g729, I cannot allow on my asterisk both g723 and g729 and let it negotiate because it will not work. I have to ONLY allow g723. However, there might be a quintum2 as a terminating endpoint that uses g729, and if I allow both g723 and g729 on my asterisk, both quintum and quintum2 will not work, if I allow ONLY g723 on the asterisk, only the first quintum will work, and if I allow ONLY g729, only quintum2 will work, I cannot send calls to both quintum and quintum2, all other gateways, softswitches work with allowing all codecs to negotiate, but it does not seem to work with asterisk, I tried h323 and SIP and reaping same results. Can anyone help me to see how I could achieve that please, thanks !! Look forward to your assistance. Thanks TC --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.576 / Virus Database: 365 - Release Date: 1/30/2004 _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users