OT: Dispatch Phones / Off Hook Condition

KuhnElectronics · Post by **KuhnElectronics** » Sat Jan 06, 2007 7:41 am

I need to pull an off hook condition from a Iwatsu Omega phone by Adix...

I called our phone reps and they said it cant be done, other than at the trunks, but I need to do this on a per position basis for a console.....

They said we need to NOT use digital phones, but at this point it isnt an option to change out phones...

Someone did mention before about some sort of digital box that monitored the digital run back to the PBX system for data, and gave a contact closure...

I know SOMEONE has ran into this before....any ideas??

Thanks,

Nick

kb4mdz · Post by **kb4mdz** » Sat Jan 06, 2007 10:15 am

Check with http://www.dees.com Dees Communications; I seem to remember ages ago running across a product they had that generated just this kind of off-hook signal. I remember it being in a Meridian system, but they might be able to help you out.

Chuk G.
Cary, NC

**edited link to work properly** - Todd

spareparts · Post by **spareparts** » Sat Jan 06, 2007 11:21 am

KuhnElectronics wrote:I need to pull an off hook condition from a Iwatsu Omega phone by Adix

Nick,
If all you need is "off hook", you can measure the loop current on each station & trip a relay. This *will* affect the maximum distace the phone can be from the switch due to the coil introducing distortion into the data pattern.

If you have a spare "donor" phone lying about, you can add bridged appearences for each position, and use the V+ source that drives the LED to switch a transitior for the bigger relay. I have done this with a IX-24KTS-2 phone. It went into a 1U rack mount chassis, with opto-isolated Form "C" contacts on the back.

BTW, If you need more phone status then that, Synway makes a PCI board, that will recover the audio, extract key operation, and lamp status for the ADIX-E switch.

Martin
Avaya G3i / 8700 Switch dog

KuhnElectronics · Post by **KuhnElectronics** » Sun Jan 07, 2007 8:59 am

I thought this would be more of a common problem, but I guess the majority of PSAPs are not using these type of phone systems....

I dont have any donor phones laying around for this system...

and the phone location is pretty far now, so I am a little concerned with throwing a coil on the line...

I have something kicking in my brain telling me that there is SOMEWHERE a box that monitors data on a digital phone system and gives a contact closure ....but I am not sure if it is specific to this application or something that was wrigged to work...

Anyhow, has anyone heard of such a device?

This is driving me CRAZY!

spareparts · Post by **spareparts** » Sun Jan 07, 2007 9:47 am

KuhnElectronics wrote:I thought this would be more of a common problem, but I guess the majority of PSAPs are not using these type of phone systems....Anyhow, has anyone heard of such a device?

Nick,
Most PSAP's use a survivable system by Avaya, NT, or Plant Equipment. All offer the interfacing you need. ADIX does not. That's why I had to build the interface from a donor phone.

Martin
Avaya G3i / 8700 Switch dog

57Shasta · Post by **57Shasta** » Sat Jan 13, 2007 9:38 pm

I have run into this before (recently a Lucent system) the only thing I can offer is my sympathy...

spareparts · Post by **spareparts** » Sun Jan 14, 2007 6:01 am

57Shasta wrote:I have run into this before (recently a Lucent system) the only thing I can offer is my sympathy...

Which switch? (or was it a small system)

Martin
Avaya G3i / 8700 Switch dog

OT: Dispatch Phones / Off Hook Condition

OT: Dispatch Phones / Off Hook Condition

Off-hook condition..

Re: OT: Dispatch Phones / Off Hook Condition