outbound calls fail intermittently using H323 and FXO to PSTN
Running CCM 4.21, H323 gateways on 2811 ipvoice 12.4(4)T. Eight FXO ports connected to Verizon Centrex lines. Intermittently, when making an outbound call Cisco IP phone shows dialed number and call seems to be proceeding but after about 9 seconds IP phone goes back on hook. Never see connected, or hear ringing. If you redial 2 or 3 times the call goes through. You can see the call hitting the same FXO port. Below is output of first call failing and second call proceeding. Anyone ever see this before?? Saw similiar post that suggested overlapping dial-peers but to me mine look good??
Comm01Lewvr1#sh voice call status
CallID CID ccVdb Port DSP/Ch Called # Codec Dial-peers
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