ru.cisco

 
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 From : Andrey A. Likhtin                    2:5083/21.23   22 Dec 2001  12:34:32
 To : Igor Vanin
 Subject : FXO, hangup
 -------------------------------------------------------------------------------- 
 

 
 У нас недавно была похожая пpоблема, нам пpишлось откpывать case, вот пеpеписка
 с ciscopями:
 
 Problem Description: Following is scheme:
 
 PBX -> FXO-> FR Provider -> FXS -> phone
 
 1. Place a call from PBX (left) to phone (right)
 2. Intentionally do not pick up the phone
 3. Close connection from PBX (just hang-up)
 4. Phone continues ring infinitely
 Placing a call in opposite derection is OK.
 If we insert a line "supervisory disconnect anytone" on FXO port then calls
 from phone to PBX (from right to left) are OK but now when placing a calling in
 opposite direction (from PBX to phone) gives us just only one ring (just one
 "ding!").
 
 ответ:
 Phone A---> PBX -> FXO-> FR Provider -> FXS -> phone B
 In the above situation, if a call comes from phone A to phone B, then if phone
 A goes on-hook before phone B answers. Phone B will continue to ring. This is
 because the FXO does not understand the disconnect signal coming from the PBX.
 Now you have configured "supervisory disconnect anytone" So the FXO will
 diconnect when it hears any tone. So when a call from phone B to phone A is
 made, the PBX will play the ringback tone, the FXO will think this is a
 disconnect signal and drop the call.
 You need to be precise when configuring the disconnect tone and configure the
 correct disconnect tone for the PBX you are using. Configuring "any tone" is not
 good.
 
 вопpос:
 So what should I do to fix the problem?
 Or how can I cofigure FXO to disconnect after 5 calls?
 
 ответ:
 The problem is to configure the correct disconnect tone. So you will need to
 find this out from
 the PBX manufacturer. Normally they should be able to tell you what frequency
 and on and off cycle (if
 used ) is being output.
 Configuring "any tone" will cause the FXO to disconnect when a tone is
 detected, in this case it's
 ringback tone. This is not a fault, this is mis-configuration.
 Here is the URL
 http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121newft/121t/12
 1t3/dt_fxodt.htm
 
 вот и все что из этого вышло.
 то что они советуют, я непpовеpял, т.к. обоpудование стоит уже у клиента ...
 Bye, Andrey.
 --- FTNed v0.23h/Win32
  * Origin: FTNed - The Best GUI FTNeditor! http://ftned. (2:5083/21.23@fidonet)
 
 

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Тема:    Автор:    Дата:    FXO, hangup   Igor Vanin   18 Dec 2001 20:36:08   FXO, hangup   Dmitriy Yermakov   18 Dec 2001 21:40:00   FXO, hangup   Slawa Olhovchenkov   19 Dec 2001 00:12:52   FXO, hangup   Igor Vanin   19 Dec 2001 15:06:03   FXO, hangup   Andrey A. Likhtin   22 Dec 2001 12:34:32   Re: FXO, hangup   Vladislav Nebolsine   18 Dec 2001 23:04:13