3300: Analog phone need voltage booster?

[pichels]

Hi all,

Currently, we have an analog "Gate phone" on the road to our manufacturing facility for truckers to call into the building at night when the gate entrance is closed.

It is just an analog phone that is about 500 yards(via wiring route maybe more) from our closet(distribution block) that has the sends a signal(ring) when picked up by the user that is sent to another on-call cordless "analog" phone that an employee in our distrbution center carries around.

We have had our Mitel vendor wire up this phone in a special way - that I am unclear of and can't explain right now.
But, I do know we have some form of voltage booster between teh wiring from the gate phone to the closet that is "supposed" to increase the signal.

I've heard from our techs that most of our phones - DNI and Analog use 9.6 Volts or somehting like that?
I'm not sure of the specifics.

I'm not sure of distance needed, how many volts/ohms to create ring or what - I haven't much electrical experience at all.

Can anyone explaion what I should tell or ask the vendor or what I can do?
DO you have more questions - please let me know, thanks!

SP

 

[kwbMitel]

Pichels, I've read your message 3 times and I can't find any reference to a problem or question that needs resolving.

Is this device not working, needs replacing, or what?

*******************************************************
Occam's Razor - All things being equal, the simplest solution is the right one.

 

[kwbMitel]

Sorry see it now, In Subject line.

When I have set up these devices there has not been a voltage booster. However there has been a gate control box that could be interpreted as a voltage booster to someone who might not know better.

A gate control interface requires a single pair loop from the gate callbox to the control. When the loop is closed via the call button the control initiates ring voltage on a separate pair to the PBX. The PBX pair is typically connected via an analog TRUNK line that then rings the internal station. Once the call is answered the voice path is established thru the control box. At this point the internal person has the option to dial a digit (typically 6 or #) that will send a signal to the gate to open.

The gate control box has 3 pairs of connections. 1 pair to the gate, 1 pair to the PBX and 1 power pair and as such looks like a power booster. (But it is not)

*******************************************************
Occam's Razor - All things being equal, the simplest solution is the right one.

 

[Lundah]

It sounds like instead of a voltage booster you have a relay control on the line, which picks up the DTMF signal and triggers a relay, which opens the gate. 500 feet should be an acceptable "wire distance" for an analog phone, but the relay control mught be adding some resistance, you'd have to get a hold of the technical specs of that unit to find out.

 

[pichels]

Hi Guys -

Sorry about the confusion from my post.
I was asking about the typical(if any!) setup of a gate phone - we need to re-restup our old gate phone - it is in a new location with new wiring and new connections that need to be connected back to our distrib block/phone room.

I think the phone tech has hold of the situation now.
He thinks voltage(48/96volts) will be enough to span the 500 yards or so.

Ok, kwbMitel - I understand your explantion of the setup above and it sounds just like the setup of our old gate phone that was dismantled and relocated now - thank-you!

I'm not sure about gate control box having a booster - it is old, maybe 10-15 yrs.
We may need to purchase a new one in the future.

If we run into further troubles I may be posting to this thread again!

SP

 

[Lundah]

You've got 2 components here. The first being the dock phone calling into the shop manager phone. That's the easy part. In it's simplest form, all you really need to do there is set up the dock phone as a hotline to the DN of the cordless phone. 500 feet is nothing, a standard ONS port should be able to go out at least 1500 feet, possible more depending on the wire size.

Where you're adding complexity is with the gate control. I'm guessing this is probably a Viking box of some sort. Viking has documentation for just about anything they ever made on their website, so if you're stuck on how to hook the thing up, my first stop would be there to find the documentation on the thing.

 

[kwbMitel]

My thoughts exactly but Lundah beat me to it. I just happen to be on a site that uses one of these devices. The unit here is an ALGO 3026.

Here is a link to the description.

http://www.algosolutions.com/products/doorphones-security/3026-Trunk-Port-Door-Control/

*******************************************************
Occam's Razor - All things being equal, the simplest solution is the right one.