I have a small network running a MCS-7825 CM with a 2811 gateway configured for MGCP. The customer is experiencing fading in and out and periodic static on all of the MoH. All voice conversations are fine. The call manager is 4.1(3)SR3C and the gateway c2800nm-ipvoice-mz.124-11.T2.bin. This has been going on for a month now. Assistance would be greatly appreciated.