|Summary:||ASTERISK-01725: [request] Support battery polarity reversal|
|Date Opened:||2004-05-29 14:41:52||Date Closed:||2004-09-25 02:11:26|
|Description:||some fxo lines send battery polarity reversal to indicate the remote party has answered. Important feature that exists today in most fxo gateways (cisco, quintum).|
This will enable proper billing for gateway functionlity
|Comments:||By: Mark Spencer (markster) 2004-06-01 16:13:12|
How does polarity reversal work? Does it reverse back? How long does it take, etc.
By: dannym (dannym) 2004-06-01 16:52:54
check this document
it details the Analog signalling for battery reversal
By: mochouinard (mochouinard) 2004-06-02 00:28:48
I would love something like that. Maybe hangup could be well detected(Mainly off a Nortel Meridian 1 System (X100P currenlt dont detect hangup, I havent try TDM400), and maybe would fix my problem of bug 1750 that I had at home with TDM400 FXO)
By: brc007 (brc007) 2004-06-02 04:21:54
Summary of http://www.cisco.com/en/US/tech/tk652/tk653/technologies_tech_note09186a00800ae2d1.shtml#topic6
On far-end answer battery polarity is reversed. Polarity remains reversed until far-end disconnect at which point the polarity is switched back to normal.
By: Mark Spencer (markster) 2004-06-02 12:04:24
That's for answer supervision.
By: dannym (dannym) 2004-06-02 15:32:28
Actually it can signal both answer and hangup supervision.
What can be done:
1- The driver wcfxs.o signals ZAP_BATREV, whenever a reversal is detected on the line.
2- zap_channel.c will react to the event depending on the state of the call.
a- The channel is in DIALING state, in this case the event will signal an
b- The channel is in UP (call is CONNECTED), in this case the event will
signal an hangup
By: Mark Spencer (markster) 2004-06-21 15:05:42
Can someone find me on IRC that has a line which does polarity reversal so I can experiment with it?
By: twisted (twisted) 2004-07-08 09:16:00
Any update? Did anyone get ahold of markster on irc?
By: egnarf (egnarf) 2004-07-08 09:54:48
I'm working with Mark to get this done.
By: twisted (twisted) 2004-08-04 23:50:03
I believe this was merged into cvs on 08/03/04 for wcfxs.c.
If this is not the correct resolution, please reopen this bug.