how do I eliminate echo on vg200 with PRI Voice T1

[admin_2]

VG200 with 2MFT-T1 card, provisioned and configured for local and second T1 for Long Distance service, experiencing echo on all calls, QoS is enabled on VoIP side of the voice network.

[#2]

Under the voice port configuration, try turning up the echo cancel coverage to 32ms.

also try twikling the input gain and output attenuation.