[cisco-voip] FXS Ring Voltage

[Mike Thompson]

After I hit send I was rethinking that (was thinking that the peak voltage
would be (approx) +90).  Yes, -48 initial voltage with ~90VAC spiked on it
for ring.

 

I guess that's karma kickin me in the groin for poking fun at Michael
Ciarfello on my other post J

 

From: cmstaffin at gmail.com [mailto:cmstaffin at gmail.com] On Behalf Of Craig
Staffin
Sent: Monday, July 06, 2009 2:45 PM
To: Mike Thompson
Cc: Paul; Jack Martin; cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] FXS Ring Voltage

 

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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