[cisco-voip] T.38 vs modem passthrough

[abbas Wali]

yes as soon as the GW identifies the V.21 tones it knows that the call is a
fax call and if the gateway is configured to do so, it may try to negotiate
fax relay with the peer gateway. Until V.21 its all modem passthrough.

On 23 October 2012 16:41, Eric Pedersen <PedersenE at bennettjones.com> wrote:

>  If both gateways are MGCP it works great. Modem passthrough kicks in
> first and then switches over to T.38 when the GW detects the fax tones.  *
> ***
>
> ** **
>
> *From:* cisco-voip-bounces at puck.nether.net [mailto:
> cisco-voip-bounces at puck.nether.net] *On Behalf Of *Scott Voll
> *Sent:* 22 October 2012 2:53 PM
> *To:* cisco-voip at puck.nether.net
> *Subject:* [cisco-voip] T.38 vs modem passthrough****
>
> ** **
>
> if everything we have is setup to use t.38 and I need Modem passthrough
> also, Can they both run together?****
>
> ** **
>
> CM 7.1****
>
> VG224****
>
> MGCP VGW 15.1T code****
>
> ** **
>
> TIA****
>
> ** **
>
> Scott****
>
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-- 
@bbas..
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