sundance-communications.com/forum Forums Other TDM Phone Systems 1A2 and Comkey Telephones & Systems PA System in 1A2--401A?

As the instruction on the PA-2A says:

"When interfacing with an unused telephone line input (trunk port), the TALK BATTERY switch (DIP switch 4) must be
ON and the PA-2A must be connected to an unused trunk port. Simply access that trunk port and talk into the handset
to page. A page alert tone may be enabled or disabled with DIP switch 3. When the page alert tone is enabled, paging
will interrupt and hold off loud ringing for the duration of the page."

I have have installed a few of these in my time where a Bogen or Valcom setup was overkill.

True. There's absolutely no way that this Viking unit is able to respond to DTMF tones at all. I didn't see the requirement to dial a digit in the documentation anywhere. Speaking from experience in installing these, they will do exactly what you're seeking from a locking (or non-locking) line key without the need for a line card, intercom card or even a slot for that matter. It provides the talk battery feed and amplification in one tiny little unit.

Nice find, Ed!

Viking never ceases to amaze me with their quality.

Sam

AND, they make some pretty neat gadgets for those situations where you "just need one more feature".

Like a CL-A16 that used 915 – 928 MHz frequency hopping technology!