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ATA186 - cannot use second phone port to make call

yeopaul
Level 1
Level 1

I connect 2 analogue phones onto the 2 ports of the ATA186. The first port can make call properly. However, if I call from the second port, it ring the other party but quickly drop the call after the first ring. I have set on the CCM to forward call to voice mail during no answer and busy. I received some message from the debug isdn q931 as follow: anyone has a hint?

Oct 22 17:27:42 10.178.223.250 267: *Oct 11 19:32:15.639 SGP: ISDN Se1/0:15

Q931: RX <- ALERTING pd = 8 callref = 0x805B

Oct 22 17:27:42 10.178.223.250 268: *Oct 11 19:32:15.707 SGP: ISDN Se1/0:15

Q931: TX -> DISCONNECT pd = 8 callref = 0x005B

Oct 22 17:27:42 10.178.223.250 269: Cause i = 0x80AF - Resource

unavailable, unspecified

Oct 22 17:27:43 10.178.223.250 270: *Oct 11 19:32:16.651 SGP: ISDN Se1/1:15

Q931: RX <- DISCONNECT pd = 8 callref = 0x68D1

Oct 22 17:27:43 10.178.223.250 271: Cause i = 0x80AF - Resource

unavailable, unspecified

3 Replies 3

thusain
Level 4
Level 4

Seems to me youre running into a codec mismatch. Remember the ATA cannot do g729 calls on both the ports, if you are using g729 on one port, then the other will automatically default to g711.

vraut
Level 1
Level 1

Hi,

Sounds like a Codec mismatch for the second line, check it out. Try making the call only with the second line when the first line is on-hook.

Regards

Viraj

yeopaul
Level 1
Level 1

Thank you guys. it's codec issue. it works now.

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