[SML] Making a phone ring and it's handset speaker work on stage

[Steven Hood]

What about hooking it up to a ClearCom system? Does the call signal 
generate enough to ring the phone?
Steven R Hood


On September 28, 2016 9:25:30 AM "Johnson, Philip via Stagecraft" 
<stagecraft at theatrical.net> wrote:

> We’re doing a show with a phone that needs to ring on stage.  I have an old 
> Tele-Q box that works so I can make the ringer work.  Now the director 
> would like to have audio from one of the other characters coming through 
> the handset speaker.   I have a pretty good idea of how to make this work 
> but I have a couple of questions of the hive mind to see if I have all 
> bases covered. If there is a device for doing this that would be the best 
> solution.
>
> 4 wire phone cord.
> Red and Green to the phone to make the bell ring etc.
> I’m planning on using the black and yellow wires to run audio to the 
> speaker and reconfiguring the phone so the handset speaker isolated to 
> those wires only.
>
> Does this sound like a good plan?
> Tele-Q will only be used to make it ring, when handset is pick up it stops 
> the flow to the ringer.
> Isolating the handset to the other lines should keep the tele-Q and audio 
> system separated
> Do I have a danger of the 90vac from the tele-Q and the audio signal 
> running along the 4 conductor phone line ?
>
> The Audio will be a wireless mic on the actor (switchboard operator)
> Wireless connected to audio console and system.
> Amp output of appropriate size and settings running a line to the phone 
> handset.
> Running both signals through 4 conductor phone wire
>
> I’ve run audio to speaker phones before but that was always through a 
> separate line.  Should I run a separate line for audio so the phone ring 
> and audio don’t interfere with each other.
> I’m also concerned 90v would do bad things to the audio console so I may 
> run a separate system just to feed the handset.
> This effect is only a couple of minutes long so it’s a lot of work to make 
> it practical.
>
> Thanks for your advice
>
>
>
> Philip  Johnson
> Lighting Designer/Technical Director
> Department of Theatre and Dance
> Texas A&M University – Corpus Christi
>
>
>
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