[cisco-voip] SRST/Analog Phone question

[Ed Leatherman]

I'm trying to setup an SRST installation at a location with about 20 IP
phones + 3 analog lines. I have a pots line from the phone company to an FXO
port both for PSTN access when in survivability mode, and also in general
for calls to come in (the number is published). This line is to ring both on
the IP phones and also on an analog line. I'm using H323 so I can get
callerid from the FXO.

I'm having a little difficulty setting up the analog line. I had hoped to
just use a 4FXS VIC in the router to handle the analog needs, but I'm
running into a problem with it. When a call comes in on the FXO line, i'm
sending it out to call manager to ring the line on the IP Phones and also
back into the router to ring the FXS line with that number. When this
happens and I answer the set on the FXS port, I get fast busy on the calling
phone and dead air on the analog set.

I set up the FXS ports as H323 enpoints pointing at another loopback
interface on the router, this was the only way I could figure to have them
act like a shared line with the IP sets but I think this is where I went
wrong. Is there a way to get these to ring simultaneously with IP Phones
correctly, or should i give up on the FXS ports and use a couple ATAs.

-- 
Ed Leatherman
Senior Voice Engineer
West Virginia University
Telecommunications and Network Operations
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