Luis Vazquez
2004-Jul-28 16:53 UTC
[Asterisk-Users] Reverse Battery Disconnect Supervision in X100P or TDM400P FXO
Is posible to make the Digium FXO cards detect disconnect supervision by polarity reversal instead of battery drop?? Our telco carrier here at Uruguay sales two disconnect supervision services called Incomming Polarity Reversal and Outgoing Polarity Reversal call supervision. We just bought the first one in the line we are testing with X100P (we have bought many TDM400P cards too) but we found the card does not disconnect the call when the line polarity is reversed on remote hangup. We checked with a voltimeter and the line voltage secuence is (approx): a) +45 : normal state (open circuit) b) -45 : Just before the first ring c) -8 : asterisk answer the call (closed circuit) d) +8 : remote party hangs up (polarity is reversed by telco) zaptel channel is not hanged up an the call go to timeout, operator queue, etc ... PROBLEM HERE e) +45 : WE finally hang up the channel Any help will be greatly appreciated. Luis Pd: My boss tell me I can spend a week or two in fixing this problem through coding in the zaptel driver so if the hardware is capable of detecting this, any hint in the proper driver function to look for or any reference to the zaptel driver documentation could be of great help.
Bartek Kania
2004-Jul-29 05:02 UTC
[Asterisk-Users] Reverse Battery Disconnect Supervision in X100P or TDM400P FXO
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Wed, 28 Jul 2004, Luis Vazquez wrote:> Is posible to make the Digium FXO cards detect disconnect supervision by > polarity reversal instead of battery drop??It is possible, but probably not as simple as just detecting the reversal during an active call, since many telcos also signal when the remote end answers by reversing polarity and this might be confused for a hangup. The X100P will not be able to do it from what I understand, but the FXO-modules do detect it. There is no driver support yet. I have some preliminary patches for it (check bug number 9 on http://bugs.digium.com). I have also implemented this for myself in sweden, and it (mostly) works. Find me on IRC i #asterisk (I go by the nick eGnarF) or email me privately and I might be able to help you. /B - -- * GPG-Key: http://evil.gnarf.org/mrbk.pgp A: Because we read from top to bottom, left to right. Q: Why should i start my reply below the quoted text? - -- http://www.i-hate-computers.demon.co.uk/ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) iD8DBQFBCOdaWYjaxM2wIe4RAixtAKCZDdZoeXqHO3VsPDV06AwIy7hy2gCfd9e4 fUfK4IRenwO+p6r+p3rwX+A=CFP+ -----END PGP SIGNATURE-----