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[John Penkala]

I have a client who wants to connect a remote site into the show comm system via a phone line. Any help or advice on how to do this and what I would need would be great. Thanks and take care.

JP

[Curt Sorensen]

Hi,
It would help to  know what hardware you're using for COM. That is, 2-wire or 4-wire? You do mention ClearCom in the subject line. If it's 2-wire get an AC10, probably the fastest, cheapest option, probably on EBay.

[Keith Broughton]

I have a client who wants to connect a remote site into the show comm system via a phone line. Any help or advice on how to do this and what I would need would be great. Thanks and take care.

JP

An AC10 is the hardware that is designed for this.
Do you need 2 way communication or is the remote site listening for show calls?

[Pete Erskine]

I have a client who wants to connect a remote site into the show comm system via a phone line. Any help or advice on how to do this and what I would need would be great. Thanks and take care.

JP

1.  What kind of com system?  ClearCom, RTS, Riedel...
2.  Does remote site also have a comm system?
3.  Do you need to connect only 1 channel or more?

something like this...http://www.bestaudio.com/s/Intercom_interface_01.pdf or more channels?

[Pete Erskine]

I have a client who wants to connect a remote site into the show comm system via a phone line. Any help or advice on how to do this and what I would need would be great. Thanks and take care.

JP

Simplest answer is to use a Telos Link.  One side is a regular dial up telephone which can be set to auto answer when the call comes in.  The other side is set for either RTS or Clearcom intercom systems.

This is actually a discontinued product but is often available in rental houses such as CP Communications.  http://cpcomms.com/gear/intercom/

Manual: https://www.telosalliance.com/images/Telos%20Products/Discontinued%20Products/Telos%20Link/the-link-manual.pdf

[Henry Cohen]

This is actually a discontinued product but is often available in rental houses such as CP Communications.  http://cpcomms.com/gear/intercom/

CP has several in inventory.

(Thank you Pete.)

[Scott Holtzman]

1.  What kind of com system?  ClearCom, RTS, Riedel...
2.  Does remote site also have a comm system?
3.  Do you need to connect only 1 channel or more?

something like this...http://www.bestaudio.com/s/Intercom_interface_01.pdf or more channels?

Pete, Decades ago Ham radio operators used to provide services to rural areas and third world countries where the amateur operator would arrange for a remote station with a device called a "phone patch" that would patch in a local loved one and facilitate the communication.  It was a wonderful outreach for the hobby.

When I saw what you posted I remember these phone patches, they essentially were a two wire to four wire hybrid and a hookswitch.  I see man listed on eBay.  It would seem this could be a poor mans interface from a Phone Line to an Intercom.

Are you familiar with the devices? 

[Pete Erskine]

Pete, Decades ago Ham radio operators used to provide services to rural areas and third world countries where the amateur operator would arrange for a remote station with a device called a "phone patch" that would patch in a local loved one and facilitate the communication.  It was a wonderful outreach for the hobby.

When I saw what you posted I remember these phone patches, they essentially were a two wire to four wire hybrid and a hookswitch.  I see man listed on eBay.  It would seem this could be a poor mans interface from a Phone Line to an Intercom.

Are you familiar with the devices?

That is what the Telos Link is but with the added advantage of an intercom interface to 2 wire.  Hams are a simplex operation and don't need the Hybrid.  Either they are talking or listening.

[Riley Casey]

Just out of curiosity, would it not be possible to rig a listen only remote site by sending a Clear Com  unbalanced circuit to a TW12 and send the balanced side of the TW12 to a standard hybrid like a Telos One?

[brian maddox]

Just out of curiosity, would it not be possible to rig a listen only remote site by sending a Clear Com  unbalanced circuit to a TW12 and send the balanced side of the TW12 to a standard hybrid like a Telos One?

Actually, you can do this even more simply by making a "pin 2 lift" that removes the DC voltage from the comm line.  You've then got a simple unbalanced audio signal that you can plug directly into your telos or mixer or whatever.

Not the most elegant solution.  But when you're a simple wire cut away from a solution, you make do. 

[Pete Erskine]

Just out of curiosity, would it not be possible to rig a listen only remote site by sending a Clear Com  unbalanced circuit to a TW12 and send the balanced side of the TW12 to a standard hybrid like a Telos One?

Listen only remote (they are listening to you) to your local comms is easy, even without the Telos one - just use a dry out box and send the line level to your phone line.

Dry out box below:  Phone line voltage will be trapped from the AB box by the cap - phone line goes across 2-3

What you need is a regular Hybrid on the input of the Telos one to change 2-wire into 4-wire.  Something like a Studio technologies Model 46 or 47.

[Ike Zimbel]

In February 2002 I was involved in a job for now defunct Nortel in which we used Clear-Com over POTS to link sites in Dallas, Ft Lauderdale, Atlanta, NYC and Toronto. I just checked my notes and we used the Clear-Com AC-10H as the hybrid devices. This system worked perfectly over the course of several days and I remember being impressed with the quality of the links. Talking to anyone on com, in any city, felt no different than, say, talking to FOH from backstage.
This was their first company-wide meeting post 9/11 and the reason behind the multi-city link up was to get around flying everybody to one city as they had done in the past.
Best,
Ike
--
~Ike Zimbel~
Wireless frequency coordination specialist.
~416-720-0887~
http://www.zimbelaudio.com/wireless-frequency-coordination/
ca.linkedin.com/pub/ike-zimbel/48/aa1/266

[Pete Erskine]

In February 2002 I was involved in a job for now defunct Nortel in which we used Clear-Com over POTS to link sites in Dallas, Ft Lauderdale, Atlanta, NYC and Toronto. I just checked my notes and we used the Clear-Com AC-10H as the hybrid devices. This system worked perfectly over the course of several days and I remember being impressed with the quality of the links. Talking to anyone on com, in any city, felt no different than, say, talking to FOH from backstage.
This was their first company-wide meeting post 9/11 and the reason behind the multi-city link up was to get around flying everybody to one city as they had done in the past.

With a good phone line the results can be great.  For several years, Clair Broadcast has done the same thing with a financial services company.  We interfaced 6 channels of comm, and IFB to each site from the main and a backup mix minus audio feed party line for all the sites.  We used  Intracom Systems' VCOM  which is an internet based 32K bandwidth multi channel VOIP system.  Here is a short video which shows it:

https://youtu.be/aXtMCEfLStw

Several years ago with Wireless First we did this show.

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