asterisk users - Feb 2005 - Q: Does anyone have a WE multi-line card dialer phone working with *?

asterisk@draughon.org wrote:
> Folks,
> 
> 	I recently obtained a Western Electric multi-line phone and am
> seeking help with getting this beast working with *.
> 
>
Egads!  That's a 1A2 key phone.  Hadn't seen one of those in over 20 
years!  ;-)  I used to install those way back in the early '80's.

Needs a mechanical KSU to support the lights and hold function, either a 
601 KSU (6 line) or a 512 KSU (13 line).  Your best bet is to dump them 
to a collector and either go with a standard single line analog or a 
decent IP phone.

Just FYI, they uses 3 pairs.  Tip and Ring for voice, A + A1 for 
"A-lead" control (hold function) and LG-L for lamp.  Also used a pair 
for a buzzer or bell.  Real museum piece as far as I'm concerned.

Just got rid of the last 3 of them in a huge Nortel system about 6 
months back.  2564 was the desk set and can't even remember the part 
number of the wall set.

George Cohn

Folks,

	I recently obtained a Western Electric multi-line phone and am
seeking help with getting this beast working with *.

	The interesting stuff in my * implementation consists of a T100P
card, a TDM400P card, and an Adtran TA750 channel bank with three quad-port
FXS modules and a quad-port FXO. The TA750 is wired to a 24-port Cat 5 patch
panel via a 25-pair Amp cable.

	The phone is a model 2662A1M; it has five lines, a hold button (I
presume), card dialer capability, and a 25-pair Amp cable for connecting to
The Phone System. (The card dialer feature, IMHO, scores major geek points.
If you're not familiar with it, you take a special plastic card about the
size of a credit card and punch out two tiny discs for each digit in a phone
number. When it's time to call that number, you insert the card in the
phone, take the handset off hook, push the "START" button,
and--voila!--the
phone speed dials your party.)

	Each line in the phone uses three pairs in the Amp cable; the first
pair is for ring and tip, the second pair is a mystery (I'm eagerly awaiting
a copy of one of the phone's BSPs so I can find out), and the third pair
illuminates the lamp in the button. Most of the remaining pairs in the Amp
cable connect to one of the terminal boards inside the phone, and one pair
connects to the phone's network (presumably for common ringing, since the
leads connect to L1 and L2).

	If I were to connect the first pair of each line to the patch panel,
I would have a perfectly serviceable five-line phone (I haven't yet tried
the "hold" button). I would not have, however, illuminated buttons to
indicate if channels were in use; nor would the phone ring on an incoming
call.

	If I connect the first and third pairs of a line and plug that mess
into a patch panel port, the lamp illuminates and the channel (according to
the TA750 and *) goes off-hook--but I do not get a dial tone. I have not,
BTW, performed any experiments with a port on the TDM400P.

	So . . . does anyone have any experience with such a project, or
have any ideas on how to trick this up?

					Cheers,

					Rob

You have what is a traditional 1A2 type telephone set. If you wish to 
use the hold key and and lights you will need to connect a 1A2 KSU 
between it and *.

Each line button has the following
pr 1 = T/R
pr 2 = A lead - this is a closure when the line is offhook
pr 3 = Lamp
Repeat x 4

Actually the Hold button is probably similarly wired.

Hold is accomplished by opening the A lead before the TR loop. This is 
held in the KSU not the telephone.

KSU also supplies your signal battery and lamp battery.

Your ringer should be connected to the yellow slate pair of wires.

Many other wiring options and configurations but this is the basic.

Good Luck

On Feb 13, 2005, at 8:40 PM, <asterisk@draughon.org> wrote:
> Folks,
>
> 	I recently obtained a Western Electric multi-line phone and am
> seeking help with getting this beast working with *.
>
> 	The interesting stuff in my * implementation consists of a T100P
> card, a TDM400P card, and an Adtran TA750 channel bank with three 
> quad-port
> FXS modules and a quad-port FXO. The TA750 is wired to a 24-port Cat 5 
> patch
> panel via a 25-pair Amp cable.
>
> 	The phone is a model 2662A1M; it has five lines, a hold button (I
> presume), card dialer capability, and a 25-pair Amp cable for 
> connecting to
> The Phone System. (The card dialer feature, IMHO, scores major geek 
> points.
> If you're not familiar with it, you take a special plastic card about 
> the
> size of a credit card and punch out two tiny discs for each digit in a 
> phone
> number. When it's time to call that number, you insert the card in the
> phone, take the handset off hook, push the "START" button, 
> and--voila!--the
> phone speed dials your party.)
>
> 	Each line in the phone uses three pairs in the Amp cable; the first
> pair is for ring and tip, the second pair is a mystery (I'm eagerly 
> awaiting
> a copy of one of the phone's BSPs so I can find out), and the third 
> pair
> illuminates the lamp in the button. Most of the remaining pairs in the 
> Amp
> cable connect to one of the terminal boards inside the phone, and one 
> pair
> connects to the phone's network (presumably for common ringing, since 
> the
> leads connect to L1 and L2).
>
> 	If I were to connect the first pair of each line to the patch panel,
> I would have a perfectly serviceable five-line phone (I haven't yet 
> tried
> the "hold" button). I would not have, however, illuminated
buttons to
> indicate if channels were in use; nor would the phone ring on an 
> incoming
> call.
>
> 	If I connect the first and third pairs of a line and plug that mess
> into a patch panel port, the lamp illuminates and the channel 
> (according to
> the TA750 and *) goes off-hook--but I do not get a dial tone. I have 
> not,
> BTW, performed any experiments with a port on the TDM400P.
>
> 	So . . . does anyone have any experience with such a project, or
> have any ideas on how to trick this up?
>
> 					Cheers,
>
> 					Rob
>
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asterisk@draughon.org wrote:
>Folks,
>
>	I recently obtained a Western Electric multi-line phone and am seeking help
with getting this beast working with *.
>
>	The interesting stuff in my * implementation consists of a T100P
>card, a TDM400P card, and an Adtran TA750 channel bank with three quad-port
>FXS modules and a quad-port FXO. The TA750 is wired to a 24-port Cat 5 patch
>panel via a 25-pair Amp cable.
>
>	The phone is a model 2662A1M; it has five lines, a hold button (I
>presume), card dialer capability, and a 25-pair Amp cable for connecting to
>The Phone System. (The card dialer feature, IMHO, scores major geek points.
>If you're not familiar with it, you take a special plastic card about
the
>size of a credit card and punch out two tiny discs for each digit in a phone
>number. When it's time to call that number, you insert the card in the
>phone, take the handset off hook, push the "START" button,
and--voila!--the
>phone speed dials your party.)
>
>	Each line in the phone uses three pairs in the Amp cable; the first
>pair is for ring and tip, the second pair is a mystery (I'm eagerly
awaiting a copy of one of the phone's BSPs so I can find out), and the third
pair illuminates the lamp in the button. Most of the remaining pairs in the Amp
cable connect to one of the terminal boards inside the phone, and one pair
connects to the phone's network (presumably for common ringing, since the
>leads connect to L1 and L2).
>
>  
>
This, and MANY other multi line phones  were used in 1A2 key systems
You will need a support Key Service Unit to use this in a multi line 
with hold an illumination configuration
Simply put your "2nd pair" is the A lead control
When the line is selected, and the phone is off hook, the pair is a 
short, allowing the A relay in the 400 ( NOT TDM400 ) card in the KSU to 
pick up, sending 10 VAC to the lamp leads. When the hold button is 
pressed, the T&R loop is still made, but the A lead circuit is opened, 
putting the 400 card in the KSU into a hold condition, then when the 
hold button is released, the line button pops up as well, removing the 
set from the T&R of that line.

Many 1A2 multi line phones could be connected in parallel, in an office.
The last 5 pair on this phone were probably used for outboard 
speakerphone, and would not be used  or connected to other sets.

Elementary Telephony.

John Novack
>  
>