RE: [Asterisk-Users] Ring power on Analog adapters
Hello, Ok, I've tried tinkering with the ring voltage (this is an editable variable on the Sipure SPA-2000) and I still can't get it to work. I plug a generic POTS line in and it works, I plug an analog port from our old Comdial PBX in and it works. with the sipura adapter I've tried changing the ring voltage in the range (20V to 90V) and the frequency from 10Hz to 100Hz both in 5 step increments and nothing seems to work. Do these analog - SIP VOIP adapters truely supply the 24V that a POTS line supplies? Anybody have any ideas why this fax machine won't work with any analog adapter I've tried? Thanks, MATT--- -Original Message- From: Jorge Mendoza [mailto:[EMAIL PROTECTED] Sent: Monday, November 24, 2003 2:07 PM To: [EMAIL PROTECTED] Subject: Re: [Asterisk-Users] Ring power on Analog adapters 24 VDC and 20 mA are loop current parameters. Ringing are into the range of 50-90 VAC and 15-30 Hz. Jorge mattf wrote: Hello, I have a big old Fax machine that will only pick up a ring at 24volts and 20mA(minimum) ring[according to the technical specs manual]. None of my SIP - Analog phone adapters supply this: Cisco - 50 volts SIPURA - 70 volts Handytone - who knows, but it doesn't work can anyone tell me if there are any analog adapters or channel banks that can send a 24V 20mA ring signal? Also, does anyone know what voltage the Digium analog PCI cards send out for ring? Thanks, MATT--- ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Ring power on Analog adapters
Do these analog - SIP VOIP adapters truely supply the 24V that a POTS line supplies? Strictly speaking, the telephone line isn't 24V. it's a 20mA DC current loop, with a ~80-110VAC ring signal. Anybody have any ideas why this fax machine won't work with any analog adapter I've tried? It's got an exceptionally high REN? If you want, you can try uncommenting KFLAGS+=-DBOOST_RINGER in the zaptel Makefile if you've got a TDM400P card... other than that I don't know what else to tell you. Regards, Andrew ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Ring power on Analog adapters
Anybody have any ideas why this fax machine won't work with any analog adapter I've tried? Have you verified you have the right tip-ring polarity? Maybe this is one of those few devices that it makes a difference when it is backwards. ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Ring power on Analog adapters
I assume that you have tested a analog phone with your ATA and it works. If this is true, I suspect that your fax machine does not work with 24 VDC but 48 VDC. POTS line and old PBX supply -48 VDC. Jorge mattf wrote: Hello, Ok, I've tried tinkering with the ring voltage (this is an editable variable on the Sipure SPA-2000) and I still can't get it to work. I plug a generic POTS line in and it works, I plug an analog port from our old Comdial PBX in and it works. with the sipura adapter I've tried changing the ring voltage in the range (20V to 90V) and the frequency from 10Hz to 100Hz both in 5 step increments and nothing seems to work. Do these analog - SIP VOIP adapters truely supply the 24V that a POTS line supplies? Anybody have any ideas why this fax machine won't work with any analog adapter I've tried? Thanks, MATT--- -Original Message- From: Jorge Mendoza [mailto:[EMAIL PROTECTED] Sent: Monday, November 24, 2003 2:07 PM To: [EMAIL PROTECTED] Subject: Re: [Asterisk-Users] Ring power on Analog adapters 24 VDC and 20 mA are loop current parameters. Ringing are into the range of 50-90 VAC and 15-30 Hz. Jorge mattf wrote: Hello, I have a big old Fax machine that will only pick up a ring at 24volts and 20mA(minimum) ring[according to the technical specs manual]. None of my SIP - Analog phone adapters supply this: Cisco - 50 volts SIPURA - 70 volts Handytone - who knows, but it doesn't work can anyone tell me if there are any analog adapters or channel banks that can send a 24V 20mA ring signal? Also, does anyone know what voltage the Digium analog PCI cards send out for ring? Thanks, MATT--- ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Ring power on Analog adapters
mattf wrote: Hello, Ok, I've tried tinkering with the ring voltage (this is an editable variable on the Sipure SPA-2000) and I still can't get it to work. I plug a generic POTS line in and it works, I plug an analog port from our old Comdial PBX in and it works. with the sipura adapter I've tried changing the ring voltage in the range (20V to 90V) and the frequency from 10Hz to 100Hz both in 5 step increments and nothing seems to work. 90V, 25Hz would be the best starting point. That is the commonest form of ring voltage you will find. Do these analog - SIP VOIP adapters truely supply the 24V that a POTS line supplies? A POTS line supplies 48V, not 24V. Its loop current is usually more like 35mA than 20mA. A number of PBX and CTI line cards supply only 24V (the Dialogic station cards, for example) and a number of phones don't work properly with them. If your adaptor really supplies 24V, that might be the problem. Anybody have any ideas why this fax machine won't work with any analog adapter I've tried? Note that unles you use A-law or u-law exclusively through the signal path, no type of modem will work through a VoIP adaptor. Thanks, MATT--- Regards, Steve ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users
