Re: [asterisk-users] Astribank loop current adjustment
On Sat, Oct 25, 2008 at 11:53:21AM +0200, Tzafrir Cohen wrote: On Thu, Oct 23, 2008 at 02:50:05PM +0200, Udo Schacht-Wiegand wrote: For a door opener on an Astribank FXS port we need a loop current of 24.5mA . It does not function with the Astribank now, the dialtone becomes quiet immediately after pressing the button on that device. I've seen a limit of 23mA in the zaptel source. Is it possible to change the loop current of the Astribank somehow? A phone that is on-hook is supposed to be an open circuit and ideally not draw any current. In the real world this doesn't really happen. The Astribank detects this by setting two limits. Anything above the high limit is considered closed circuit (off-hook). Anything below the lower limit is considered open circuit (on-hook). This (and what followed) was a good answer to the wrong question (as he asked about the current when the line os off-hook). Luckily Udo insisted and was later answered in private mail. Anyway, such questions should normally go to [EMAIL PROTECTED] . -- Tzafrir Cohen icq#16849755 jabber:[EMAIL PROTECTED] +972-50-7952406 mailto:[EMAIL PROTECTED] http://www.xorcom.com iax:[EMAIL PROTECTED]/tzafrir ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Astribank loop current adjustment
2008/10/23 Udo Schacht-Wiegand [EMAIL PROTECTED] For a door opener on an Astribank FXS port we need a loop current of 24.5mA . It does not function with the Astribank now, the dialtone becomes quiet immediately after pressing the button on that device. I've seen a limit of 23mA in the zaptel source. Is it possible to change the loop current of the Astribank somehow? You need to ask Xorcom that question. They have the ability to adjust any registers in the FXS port chip so I expect that they can do that. Steve ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] Astribank loop current adjustment
On Thu, Oct 23, 2008 at 02:50:05PM +0200, Udo Schacht-Wiegand wrote: For a door opener on an Astribank FXS port we need a loop current of 24.5mA . It does not function with the Astribank now, the dialtone becomes quiet immediately after pressing the button on that device. I've seen a limit of 23mA in the zaptel source. Is it possible to change the loop current of the Astribank somehow? A phone that is on-hook is supposed to be an open circuit and ideally not draw any current. In the real world this doesn't really happen. The Astribank detects this by setting two limits. Anything above the high limit is considered closed circuit (off-hook). Anything below the lower limit is considered open circuit (on-hook). The values of those limits are 6.72mA (low) and 10.16mA (high). Thus 24.5mA is well into what is considered an open circuit. If you try to raise those limits, you may encounter problems with detecting a phone being picked up and such. As Steve mentioned, tweaking this can be done by setting registers. However those tweaks tend to interact with other things in strange ways. Therefore I would not provide here the specific details without fully understanding the situation. Generally for such matters contact [EMAIL PROTECTED] . -- Tzafrir Cohen icq#16849755 jabber:[EMAIL PROTECTED] +972-50-7952406 mailto:[EMAIL PROTECTED] http://www.xorcom.com iax:[EMAIL PROTECTED]/tzafrir ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
[asterisk-users] Astribank loop current adjustment
For a door opener on an Astribank FXS port we need a loop current of 24.5mA . It does not function with the Astribank now, the dialtone becomes quiet immediately after pressing the button on that device. I've seen a limit of 23mA in the zaptel source. Is it possible to change the loop current of the Astribank somehow? Udo ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
