Connecting alarmsystems to Phone port

[Gunnaro]

Hi!

I've customer with an alarmsystem that is messing up the analog port.

The analog port works fine when testing with a regular phone, but when the alarm goes off, it fries the port.

I've to pull out the base card and reinsert it to get the port working again.

Anyone experienced the same or have a clue about how to fix this?

(alarm worked just fine when connected to a pots-line)

regards
Gunnar

 

[amriddle01]

Sounds like the alarm system is pushing voltage back at the port or just shorting it out, if a handset works fine then the alarm system isn't operating in the correct way or that would work too


ACSS (SME)
APSS (SME)

http://www.ipoffice.tel

"I'm just off to Hartlepool to buy some exploding trousers

 

[Gunnaro]

Well, that's my guess too.

Alarm company says it all fine, and that it must be the IPO..

Maybe a resistor could fix this.

regards
Gunnar

 

[tlpeter]

Are you aware that when the ipo is down that the alarm will never ever reach the fire department!!!!!!!!!!!!

I also think that there must be rule that disallows this.

Homo sapiens non urinat in ventum

honey, i fried the IP Office !!!

Sarcasm, it's only one of the services I offer.

 

[kwing112000]

Peter i was thinking along the same lines. I try to never put important alarms on the system. they really should be on a pots line. Is this line you are using on a 31x jack? is it maybe shorting something?

Kevin Wing
ACSS Small and Medium Enterprise (SME) Communications
ACS- Implement IP Office
ACA- Implement IP Office
Carousel Industries

 

[Gunnaro]

Oh really?

I sure hope this alarm never call the firebrigade, since it's a burglar alarm.

As for the IPO: It can shut down as much as it likes, since the alarm uses GPRS as primary connection.


regards
Gunnar

 

[tlpeter]

I never ever do this unless the customer is demanding on it.

I have experience with healtcare systems and alarm across it (Tenovis)

A lot of times the fire alarm was connected too.
All dect base stations needed to have a special cable in special pipes that are fireproof for at least 30 minutes.
Also every cable from the ISRA (don't know what it is called in the US or UK but it is the box where the provider's cable ends) must be fireproof.
The PBX must be on a battery that can less at least 30 minutes.
Also the room where it is must be fireproof.
I am sure i forget a lot so tell the customer that this is at there own risk.
There are life's depending on it!!!



Homo sapiens non urinat in ventum

honey, i fried the IP Office !!!

Sarcasm, it's only one of the services I offer.

 

[Gunnaro]

No, it's two wires on a RJ45 (pin 4 and 5).

No worries, we use POTS for firealarms.
Firebrigade monitors these lines, so surly a bad idea to connect them to an IPO.

(they call if the line is down for more than a 100 sec)

regards
Gunnar

 

[tlpeter]

If you have a POTS line anyway only for the fire alarm then i would still not connect it to the IPO.

I would put it straight on the fire alarm system.
This will save you a lot of hassle when it doesn't work



Homo sapiens non urinat in ventum

honey, i fried the IP Office !!!

Sarcasm, it's only one of the services I offer.

 

[Gunnaro]

Well, the alarm still uses GPRS (GSM), and has nothing to do with healthcare.

Analoge connection is a backup and remote access for alarm company (adding new users, changing pinkode, etc).

Every IPO I've installed is connected to a 1000VA (or higher) UPS, so it will run for hours in case of an outage.

(UPS is thought of as mandatory in Norway).

regards
Gunnar

 

[Gunnaro]

Connecting the POTS line to the IPO would be ridiculous,
or at least redundant and a waste of money. (would need an extra combocard just for this)

Our customers use only BRI og PRI for voice transmission.


regards
Gunnar

 

[ctvi]

How are you wired into the alarm system? If you are providing just dial tone, make sure you plug in an RJ11 cord with just the central pins connected i.e. one pair. They normal alarm jack is an RJ31x which the alarm company may have wired up for more than just dial tone as the first poster amridle01 answered.

http://www.ctvi.com

 

[Gunnaro]

As I described before: single pair into a RJ45 pin 4 and 5.

Voltage on the Phone port is 32V, but drops to 9V when the alarm tries to get a dialtone.

Guess I have to make the alarm company swap the unit and see if things work out then.

regards
Gunnar

 

[ctvi]

Are confident that it is related to the Alarm? I had a customer who plugged in a 220 copier into a 110 outlet and they blew out quite a few cards in the phone system. (not Avaya) Isolate the power?

http://www.ctvi.com

 

[Gunnaro]

How on earth did he get a 220V into a 110 socket? Sledgehammer?

IPO is surgeprotected and connected to a high quality UPS, and I've checked that it is grounded.

Fault showes up in SysMon like this:
(first cardslot, combocard, port 7)

279882589mS CMMap: a=0.7 b=0.0 B1
279883089mS CMMap: a=0.7 b=0.0 B0
279883589mS CMMap: a=0.7 b=0.0 B1
279884089mS CMMap: a=0.7 b=0.0 B0
279884589mS CMMap: a=0.7 b=0.0 B1
279885089mS CMMap: a=0.7 b=0.0 B0
279885589mS CMMap: a=0.7 b=0.0 B1
279886089mS CMMap: a=0.7 b=0.0 B0
279886589mS CMMap: a=0.7 b=0.0 B1

B1/B0 is on/off hook, but I seriously doubt that the alarm is trying to make a new call every sec.


My guess is that the alarm has some kind of constant line check.
A warning light shows up a couple of seconds after I disconnect it from the port, and the port don't like being tested....

Have sent a request to the manufacter of the alarm, might be a config on the alarm that has to be changed.

BTW: Tested it on an old Nortel pbx, work like a dream.


Makes me wonder if phoneports extremely fragile...


regards
Gunnar

 

[tlpeter]

Well, the alarm still uses GPRS (GSM), and has nothing to do with healthcare.

I never said you did
It is very common to connect the firealarm to that same system.
The alarms will show on the dect phones so that is why i know those rules.


Homo sapiens non urinat in ventum

honey, i fried the IP Office !!!

Sarcasm, it's only one of the services I offer.

 

[Gunnaro]

Didn't quit follow you there.

Alarms will disturb dects? or show up as a warning in the display?

Guess you used the 3725's, seen Ascom promote them as designed for Healthcare.

(I'm still struggelling with absence indicator on the 3720's, but I've managed to get a GRIP placed)

regards
Gunnar

 

[tlpeter]

In the healtcare it is very common that alarm, generated by the people who live there, are shown on the dect phones of the nurses.
They then know what kind of alarm and which room this is for.
It is normal that the fire alarm is connected to that system too so that when there is a fire that the system sends the exact place where the fire is.
This way it can be much more safe.
And because they then count on this system it must be fire proof for at least 30 minutes.

I just wanted to let you know this because of the rules about fire alarm systems connected to a PBX.


Homo sapiens non urinat in ventum

honey, i fried the IP Office !!!

Sarcasm, it's only one of the services I offer.