ASM interface to Gentner TS-612, disconnect not happening

[kpcw92FM]

The Gentner TS-612 is a 12 line broadcast phone interface. It requires a polarity reversal or current interruption in order to release the line when a caller disconnects. The Norstar ASM (NTBB51CA) provides neither... or does it? Does anyone have any ideas on how to get a disconnect out of an ASM? Or perhaps to get automatic port idle indication? Perhaps even to hack into the data to the CAP which is the only obvious status indicator of the ASM's ports.

The problem is that when a caller hangs up, the ASM doesn't tell the Gentner to do the same. The ASM releases but the Gentner remains off hook. This doesn't work for live radio! When the Gentner is connected directly to a CO, there is no problem. We have no way to predict which CO's the Gentner is connected to at any given time via our NAM/ASM, so I can't sense the CO's.

Ideas? Comments?

Thanks! Greg, KPCW 91.9 FM Park City, UT
phones@kpcw.org

 

[mroberts]

Unfortunately the ASMs do not provide disconnect supervision.

Norstar Handbook:

"CLASS/ CMS capabilities and disconnect supervision are not supported on the Analog Station Module. This is consistent with ATA 2 functionality. For analog connections requiring disconnect supervision, a Voice Mail Interface Unit is required." MRoberts
mroberts@americaii.com
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[executone]

We installed at a radio station that had Getner equipment and had to install Getner infront of the Norstar for disconnect supervision to work with the Getner phones. On the Getner recording equipment there was a switch to tell if line coming in was from Telco or a PBX. We set to pbx and it seemed to eliminate problem. Are radio station had dedicated loop start lines. If you are using T1/PRI you should do as mroberts posted.

Good Luck!!