This is due to with passthrough the gateways do not demodulate the T.thirty messages, rather They're handed by transparently in the G.711 codec throughout the IP community. Nonetheless, If your gateway uses fax relay since the fax transport technique, then it does demodulate the T.30 messages and might manipulate the ECM negotiation. On Cisco IOS®… Read More


It's because with passthrough the gateways do not demodulate the T.30 messages, fairly They are really passed by transparently inside of a G.711 codec across the IP community. On the other hand, If your gateway works by using fax relay given that the fax transport system, then it does demodulate the T.thirty messages and may manipulate the ECM nego… Read More