Configuring FXS port to be always off hook

Unanswered Question
Oct 20th, 2008

We have customer that requires specials tones to be passed from one to location to another location via cisco routers with FXS cards. The call has to be always off-hook and its should just pass the tones with any conversion end to end. Has anyone configured this on gateway before?

The flows is "Tone->FXS->Router(FR,ATM,IP)->Router->FXS->Tone management system".

These are special tones for train signals.

I have this problem too.
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kylezacher Mon, 10/20/2008 - 21:51

I would suggest replacing the FXS cards with E&M cards (VIC-2EM). The EM cards are designed for a Trunk circuit such as what you are describing, and as such are always "Off Hook". They can be configured as 2wire (POTS) or 4Wire (Private Line).

abdel-moniem Tue, 10/21/2008 - 00:58

I think you can make Trunk connection end to end, with hoot n holler circuit alike

which will keep the path end to end open and FXS offhook


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