Help/Opinion For Rewiring

[itsjohnwoo]

Hey guy, I've been a lurker on this site for the last 3 months. I am mostly an IT guy but recently took on contract jobs like extending the demarc and such. But I have a job coming up and I am not too sure what to do.

I was told the premises needs to be rewired.
There is currently 4 Lines - I was not told any more information as of yet, I believe the provider is Megapath.
Current set up:
Line 1 - Primary Phone
Line 2 - Credit Card
Line 3 - Fax / DVU ( I was told this and thought it was DSU)
Line 4 - Alarm

New Set UP:
Line 1 - Primary Phone
Line 2 - Disconnect and Move to Line 3
Line 3 - Alarm / Credit Card / Fax / DVU??
Line 4 - Disconnect

This is the information that I was provided as of now. I would assume it is connected on the 66 block. Is there any advice that you guys can give me to help me make this easier? I have not done this before and it worries me a bit because I never dealt with the alarm line. How and what is the best way to rewire lines 2/4 to have it all in Line 3? Sorry for having so little information on this.

 

[cajuntank]

Having the credit card machine and the fax on the same line seems ok to me. Sharing that with the alarm is giving me some concern. You might want to touch base with the alarm company to see if that's "kosher". I have no idea what a DVU translates to and it wouldn't be a DSU as that would be the terminating electronic equipment for a digital circuit like a T1.

 

[itsjohnwoo]

Thanks cajuntank,

I was wondering the same thing about having all 3 on that one line. I'll have more info by tomorrow. If anyone is familiar with the and can enlighten me, please do.
Thanks!

 

[whykap]

is this security alarm or fire?

 

[itsjohnwoo]

At the moment, I am not sure yet. I would think it is for security as it is for a retail store.

 

[cvrbob]

move the alarm to line 1 with a RJ31X ( even though I don't like the alarm on 1 , encase the alarm has any trouble it can cause NDT, on phones, I like at the end of hunt groups )

DSU ,must be DSL which can have the Fax & credit card with filters

 

[Yorkie9]

You don't say what country your in?

If your in the UK you could put the intruder/fire alarm onto BTs' monitored redcare system/service or maybe they could use a moblie/GSM set up that appears to becoming into favour?

Don't think your alarm/insurance co would look upom it tooo favourably as an incoming call would stop the alarm from calling out!

 

[itsjohnwoo]

Thanks for the info guys. Im located in New Jersey.

As of now, Line 1 will not change or have anything added to it. All of the other 3 will be combined to Line 2 or 3. The alarm will need to be installed first before any of the other 2.

Basically what needs to be done is,
From the ILEC demarc, there will be 2 connections, line 1 will remain the same, line 2 will will goto a adsl splitter, then to the alarm (RJ31X) then the fax/CC/DBU modem. From the DBU modem back to the router
Also, from the splitter, the ADSL modem will go to the router.

Sounds a bit confusing, I'm a bit worried I might mess this up.

 

[cvrbob]

The alarm & fax should not be on the same circuit, as they both ans to a modem, , how can the alarm company call into the alarm to test when the fax will ans.How can you fax in if the alarm ans.
Future problems that you will have for sure when one screws up

 

[SYQUEST]

My experience with shared alarm lines, except for fire, is the inward is NOT used by the alarm company. Unless the alarm tech was on prem to do a forced answer for testing or whatever. In one case they set the alarm control unit ring count to 10 or 12 so the fax would function properly.

....JIM....

 

[wires]

I think a good question would be how important the alarm system is to your company. If you only need the alarm after hours and turning off the fax at after hours is acceptable then you might be OK.

Several companies I work with get over 100 junk faxes some nights. That would be at least a hour of downtime per night that the alarm would be unable to make an instant dial out due to incoming fax calls. Of course the alarm will interrupt any incoming call when it needs to dial out but there will be a delay before dial tone returns to the line.

Dial in by alarm companies is seldom (if not never) used.

If having the alarm work reliably or during business hours (hold up alarms etc) you might want to investigate either cellular backup or cellular primary for the alarm.

 

[Yorkie9]

Is there a way of having the alarm monitored over the line but still be able to use the line in the US?

Have a look at this web site

http://www.redcare.bt.com/Products_services/Classic.html

for details, Unlike other alarm signalling services, Redcare both alerts the ARC when it detects a line cut AND provides encryption to prevent the substitution of equipment or "spoofing" (emulation) of line conditions. This is why Redcare is the most secure system of its kind.

Is this available in the US?

 

[SYQUEST]

There are several alternatives to a modem, but they usually cost more, so people are cheap and don't want to do them.

Before using a modem, alarms used a McCullough Loop, a series type of private line service between the alarm central and the customers' premises. Later, some used a 2-wire data channel. Now almost nobody uses the "good" service stuff that works, because it "cost to much"!

SO you get what you pay!

....JIM....

 

[FesTek]

looks pretty easy you can share the alarm line
but fire usually its on its own.

66 blocks went (flintstone) obsolete in 1980 I do work for some US based companies and they prefer 66 blocks

bix is better

 

[SYQUEST]

I have been a BIX person since the 1980s! It's the one I like the best...

....JIM....