[cisco-voip] Use an FXO port for outbound calling only - no answering of incoming calls

[Ryan Ratliff]

I think the idea is he has two devices on the same copper and doesn't want one of them to ever ring.

Think of it as having two phones in your house.  You want one of them to only be used for outbound calls and the other to ring and be able to answer inbound calls.

Unless you can do something with the physical wiring to make the FXO never see ring voltage I think you are better off sticking an FXS card into the router with the FXO, connecting the same device currently sharing the pair with the FXO to this FXS and directing inbound calls to the FXS port.
 
-Ryan

On May 4, 2011, at 2:06 PM, Paul wrote:

I believe so long as you keep the phone number that is associated with that CO trunk, nobody should be calling it in the first place except by chance. If you want to dedicate it for outbound calling and want it to give a busy signal when someone calls it, just PLAR it to an non-existent number within that box. A called FXO port will automatically ring and give you dialtone with nothing configured as it's supposed to.

From: Tim Reimers <treimers at ashevillenc.gov>
To: cisco-voip at puck.nether.net
Sent: Wednesday, May 4, 2011 8:08 AM
Subject: Re: [cisco-voip] Use an FXO port for outbound calling only - no answering of incoming calls

 
Hi all –
 
I’d like to use an FXO port for outbound calling only –
I don’t want the port to go offhook    _at all_  for any incoming call/ring event-
there is other POTS equipment on the same copper pair that should answer any inbound calls.
 
Currently, I have no dial-peers at all in it-  but it’s still answering calls even with nothing configured on it.
 
I can shutdown the ports obviously, but that’s rather counterproductive to using them for outbound calling  ;-)
 
thanks, Tim

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