[cisco-voip] FXS Ring Voltage

[Craig Staffin]

Hey Mike,

I just wanted to clarify that the standard ring voltage that you should
receive from the telco is 90Volts AC.  Not 150 VAC

This is also what Cisco FXS ports output as ring voltage.

Craig


On Mon, Jul 6, 2009 at 1:28 PM, Mike Thompson <mthompson729 at gmail.com>wrote:

> Correct, traditionally night ringers connect right onto an FXS port.
>
> Base line voltage on an FXS is -48 volts DC.  Ring voltage is 150 volts AC.
> When it rings, it will trigger a night ring input (like the input on a
> bogen
> amp for example) to play its ring tone over the speakers.
>
> -----Original Message-----
> From: cisco-voip-bounces at puck.nether.net
> [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Paul
> Sent: Monday, July 06, 2009 2:11 PM
> To: Jack Martin; cisco-voip at puck.nether.net
> Subject: Re: [cisco-voip] FXS Ring Voltage
>
>
> Sorry. No, I used the FXO for paging. However it sounds like the night bell
> is supposed to be activated when the phone rings.
>
> via Wikipedia...
>
>
> The ringing signal sent to a customer's telephone is AC at 90 volts and 20
> hertz in North America.
>
> HTH
>
>
>
>
> ----- Original Message ----
> From: Jack Martin <jackm at tushaus.com>
> To: Paul <asobihoudai at yahoo.com>; "cisco-voip at puck.nether.net"
> <cisco-voip at puck.nether.net>
> Sent: Monday, July 6, 2009 1:44:11 PM
> Subject: RE: [cisco-voip] FXS Ring Voltage
>
> Paul,
>
> You used an FXO port for the Night Ringer?
>
> Jack Martin, CCVP
> Network Engineer
> Tushaus Computer Services
> 10400 Innovation Drive, Ste 100
> Milwaukee, WI 53226
> 414.908.2222 Helpdesk
> 414.908.2267 Work
> 414.908.4467 Fax
> http://www.Tushaus.com
> http://www.Linkedin.com/in/Jackster
>
> -----Original Message-----
> From: Paul [mailto:asobihoudai at yahoo.com]
> Sent: Monday, July 06, 2009 12:35 PM
> To: Jack Martin; cisco-voip at puck.nether.net
> Subject: Re: [cisco-voip] FXS Ring Voltage
>
>
> If you have an FXO card/port, use that instead. It works like a charm on
> the
> PCM 2000...'er it did for me off of a 3825 box with an FXO card on it.
>
>
>
>
> ________________________________
> From: Jack Martin <jackm at tushaus.com>
> To: "cisco-voip at puck.nether.net" <cisco-voip at puck.nether.net>
> Sent: Monday, July 6, 2009 1:24:03 PM
> Subject: [cisco-voip] FXS Ring Voltage
>
> I have a customer that wants to connect a FXS port to a Night Ringer on a
> Bogen PCM2000.  We are seeing the 48V on the circuit but we need 90V to
> trigger the Night Ringer.  Do we use a step-up transformer in this case or
> does anyone know of a 3rd party solution?
>
> Thanks for your help.
>
> Jack Martin, CCVP
> Network Engineer
> Tushaus Computer Services
> 10400 Innovation Drive, Ste 100
> Milwaukee, WI 53226
> 414.908.2222 Helpdesk
> 414.908.2267 Work
> 414.908.4467 Fax
> http://www.Tushaus.com
> http://www.Linkedin.com/in/Jackster
>
>
>
>
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