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Port Numbering
When setting the feature status, the SLT will receive error tone if the feature access
code combination is incorrect.
When error tone is heard, the SLT must hang up and lift the handset again to attempt
any further operation.
SLT features DND, Call Forward, and Message Waiting (when a Message Waiting
indication has been left at the SLT) alert the SLT user that the feature is active by an
interrupted (stutter) dial tone.
2-port Analog Adapter
Description
A 2-Port Analog Adapter is provided for connection of standard 2-wire analog telephone
equipment to the digital network of the DHS/DHS-E. Common uses of the 2-Port Analog
Adapter are voice mail, facsimile machines, modems, and single line analog telephones.
The 2-Port Analog Adapter is a self-contained, system-powered apparatus that creates 2
separate analog station ports from one system 2B+D digital key telephone port. The
housing accommodates the electrical components of the 2-Port Analog Adapter and the
2-Port Analog Expansion. The 2-Port Analog Expansion PCB is exactly the same PCB and
function as the 2-Port Analog Adapter PCB function. (One 2-Port Analog Expansion may
be added to the 2-Port Analog Adapter housing.) The 2-Port Analog Adapter and 2-Port
Analog Expansion each provide 2 dedicated DTMF receivers for decoding the dialed
digits from the connected device. (Each analog port has a dedicated DTMF receiver.) To
place calls, the analog telephone must provide DTMF tone signaling which is decoded by
the adapter for call processing instructions. Twenty-five cycle (frequency) ringing is
provided by each analog adapter for the attached analog device. Since each 2-port
adapter provides dedicated DTMF receivers and ringing generators, and because the
system has a non-blocking digital ICM bus, the single line telephones (SLT) are not traffic
sensitive and do not require special traffic balancing.
Conditions
Any single line (2500 type) telephone equipment can be connected to the system
using the 2-Port Analog Adapter and 2-Port Analog Expansion.
Directory Numbers DHS (58-81) and DHS-E (148-195) are assigned to B2 channels for
SLT use at default.
When 2-port analog adapter is installed, the first single line extension number from
that adapter is the same as the digital port extension number into which it is
plugged. The second analog extension number is the first number plus 48 (example:
100 and 148, 101 and 149). Refer to
SLT Port Numbering
Some modems are not compatible with 2-port analog adapters.
Directory Numbers are changed in system programming.
(DHS), and
Chapter 6, SLT Features and
Table 5-3: SLT Port Numbering
5-17
Operation:
Table 5-2:
(DHS-E).
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