Trouble with Alarm Panel dialer communicating through an AudioCodes mp1288

[dstokes805]

Hello,

I am trying to connect a building alarm panel dialer to an AudioCodes 1288. No matter the settings I change the modem lines don't seem to synch up. I monitor the line connected to the legacy PBX and the communication seems the same. I know there is some delay which is probably causing the issue. I see modem settings in the Audio Codes, but the recommended Fax settings from Zoom seem to be interfering with them. 

Has anyone had any luck when attempting this before. I have also tried with a Grandstream ATA with no luck. 

Thanks,

Derek

[sparrow]

Who's the alarm company?

[dstokes805]

I am trying to work with older Bay Alarm panels.

[cdmiller]

I have the same problem with Bay Alarm panels with Grandstream and Audiocodes.  Any information would be appreciated.  We are trying to avoid replacing several panels.

[sparrow]

If this is strictly a dialing issue? I suggest you download a program called syslog viewer from the Audiocodes website. In your Audiocodes MP1288 syslog settings, point the address to your local desktop/laptop running that application. Then try initiating a call from the panel to Zoom to see what the SIP traffic is doing with the call. In our setup with our local alarm company, we don't use any fax/modem settings on the audiocodes gateway. However, not all alarm companies are willing to make things work with a VOIP provider. When your converting SIP to analog signaling, that transcoding causes early disconnect.