[cisco-voip] Cisco VOIP and fire alarm phone lines

[Lelio Fulgenzi]

There was some talk about this a while back and my research (mainly from the archives and contacting individuals) shows two things: 

    • it depends on the protocol you are using (SCCP, MGCP, H323) , and 
    • it depends on the protocol/functions of the alarms 

If you are using simple alarms, that simply call home with no active data, then SCCP should be fine. 

If you are using intelligent alarms, those that supply contact info for example, then I believe you have to go with H323. 

If you do some searching on the archives, you'll get some threads you can look through. 



Lelio Fulgenzi, B.A. 
Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1 
(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN) 
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"Bad grammar makes me [sic]" - Tshirt 


----- Original Message ----- 
From: "Tim Reimers" <treimers at ashevillenc.gov> 
To: cisco-voip at puck.nether.net 
Sent: Wednesday, November 4, 2009 2:51:54 PM GMT -05:00 US/Canada Eastern 
Subject: [cisco-voip] Cisco VOIP and fire alarm phone lines 


Does anyone know if Cisco has any recommendations they officially make on supporting analog telephony devices like fire alarm panels? 

We use ATAs for supplying dialtone to fire alarm dialers, and we're getting issues with some panels getting "comm trouble" issues, and data not getting to the monitoring company correctly. 

The security vendors and the OEM manufacturers are saying "we don't recommend VOIP for alarm lines" 

Our management is saying that surely Cisco supports this, and with the correct configuration, they can make this happen. 

I'm looking for some official Cisco guidance (links to design guide statements, etc) 
that might break the deadlock, and either allow me to prove to the vendors and OEMs that VOIP is indeed a stable technology 
or, allow Cisco the graceful way of saying "it's best not to do that" 

Anyone got anything to offer? 

I'd imagine that there's a fair number of folks who've just decided not to use VOIP for this purpose- 
That's just not the decision here though..and I'm not the policymaker on that level. 

Tim 
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