Rob at draughon.org writes
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.)
Jerry has already posted the basics -- this is a traditional "fat wire key system" phone and will work with either 1A1 or 1A2 key equipment. The first pair is tip and ring, the second pair is A-lead control, the third is for the light. When you press the hold key, the A-lead is disconnected first; when you release the hold key, the line button pops out which disconnects tip and ring. The key telephone unit (KTU) card in the key service unit (KSU) chassis detects this sequence and puts a holding bridge on the line and changes the lamp from steady to winking. There is a group of telephone collectors putting together Asterisk boxes who will be able to fill you in on all relevant details, see www.ckts.info and join the list at http://lists.ckts.info/mailman/listinfo/voip
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