Instruction manual

Introduction
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(like a public announcement system). Numeric pages display a set of numbers (usually a phone
number) that the caller keys in by way of DTMF telephone. Alphanumeric pages are text mess-
ages sent to alphanumeric-compatible display pagers. Alpha messages can be generated through
a variety of input devices, including a standard touch-tone telephone. Talkback paging connects
the caller directly with a paging customer who has a portable radio for 2-way communications.
System Voice Prompts
The Model 640 DAPT XTRA comes with prerecorded voice prompts that guide callers through
the paging entry process. The prompts can be customized by the system operator, if desired. In
addition, voice prompts can be enabled and disabled for the entire system, for a specific trunk, or
for an individual subscriber.
Voice Storage
The Model 640 DAPT XTRA stores up to 280 seconds of pooled voice storage to support voice
pages. The silence compression feature eliminates pauses in the caller’s voice message to maxi-
mize storage space. The voice memory also is used to save messages that are interrupted by a
breakthrough page for later retransmission.
Telephone Interfaces
The Model 640 is flexible enough to interface with a wide variety of telephone line types. In
addition, all four trunks (with two dual-trunk cards installed) can be serviced by a different type
of line. The paging terminal is compatible with E&M, DID, and End-to-End phone lines. The
telephone interfaces can be initiated by ground start, loop start or wink start, depending on the
specific trunk configuration. The 640 can also be connected to a PABX, an RS-232 input device,
or a Zetron Model 103 (manual paging entry station).
In addition, the Model 640 can be configured to decode several types of signaling protocols. The
dial click and MF (multi-frequency) options allow the paging terminal to accept feed digits other
than standard DTMF.
Priority Paging
The Model 640 supports four paging priority levels. The two highest levels of priority are next-
out (where the page immediately moves to the front of the queue) and breakthrough (where the
page is immediately cut through to live air). Priority can be assigned per-subscriber or trunk line.
Priority paging is essential in emergency response applications, where people must receive noti-
fication in a timely manner. In addition, priority allows TNPP-networked systems to give local
paging subscribers faster service than roaming customers.
Pager Formats
The Model 640 supports nearly every kind of paging format available on the market (2-tone, 5/6-
tone, HSC, Golay, POCSAG, and FLEX are among the standard capabilities). This allows for
easy upgrade transitions to newer formats and cost-effective use of older pagers.