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1. Problems connecting ATA-186 to CallManager 3.2 using MGCP

Hi,

I've been trying to connect an ATA-186 Version v2.12.ms to Cisco
CallManager 3.2 without success. The CM was configured for
auto-registration. When the ATA-186 is configured to use MGCP1.0, the
CM response to the RSIP request is error 510 and now dial tone is
heard when the I pickup the phone. When using MGCP0.1 the error code
is 500, but again no dial tone is heard. (I got the error messages by
sniffing the traffic between the ATA-186 and the CM using a network
sniffer). I also tried to manually add the phone to the CM, but again
without any success.

Any ideas?

Benny

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