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MERLIN LEGEND Communications System Release 6.1
Installation
555-661-140
Issue 1
August 1998
Installing Telephones and Adjuncts
Page 3-30
Installing Adjuncts
Dual-Tone Multifrequency (DTMF) Signaling
You can connect external paging systems that use dual-tone
multifrequency (DTMF) signaling, such as PagePac
Plus with Zone
Expansion Unit paging systems, to an LS or GS line/trunk jack
programmed for paging operation, including bidirectional paging
operation (talk-back). PagePac Plus does not require an adapter.
Zone paging systems, such as the PagePac series, require one LS or
GS jack. You can use any zone once the paging jack is activated.
You must use a Universal Paging Access Module (UPAM), or PagePal
(for PagePac series systems other than PagePac Plus) to connect a
paging system that requires contact closure, an impedance-matching
transformer, or both.
Use a Loop Start Trunk Adapter when a customer-supplied paging
system does not require contact closure.