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❑
To route to another port on the SLSS during the same call, enter 44 when you
hear dial tone. Port 4 will ring, but you won’t hear the Acknowledge Tone or three
beeps.
❑
Hang up when the last call is finished.
Note:
To use this feature, the calling modem must be programmed not to
hang up on loss of carrier. Please see the modem’s manual for programming
instructions.
Port Access Priority at the SLSS
You can establish one of three types of priority to determine how competing users
or devices at the SLSS are given access to the line. This is determined by a
programming command, as described in Chapter 3. Total, Emergency, and No
are the priority modes.
If Total Priority Mode is enabled, Port 1 (normally a telephone) is given
immediate access to the line whenever the phone goes off-hook. If another port
is using the line (for example, data transfer is taking place), the modem is
disconnected and the line freed for the telephone user. Port 2 also has priority
access over Ports 3 through 8, but not over Port 1; Port 3 has priority access over
Port 4 through 8, but not over Ports 1 and 2, etc.
If Emergency Priority Mode is enabled, a Port 1 user is given priority when one
of the programmed emergency numbers is dialed. The SLSS can be programmed
to allow up to ten 16-digit numbers.
In this mode, all other ports work as if in Total Priority mode.
If you have programmed an Access Code, Port 1 will get access to the line
whenever the access code is entered, regardless of the number dialed.
Caution:
If an SLSS port is receiving an incoming fax when you go off-hook in
either Total Priority Mode or Emergency Priority Mode, the SLSS will be
unable to obtain network dial tone until the sending fax disconnects or until
the PSTN times out (usually within 10-15 seconds).
If No Priority Mode is enabled, no port can access the line when another port is
using it.
There are certain conditions under which a caller making a priority interrupt call
at the SLSS may not be able to immediately obtain dial tone to make a priority
call. The user will experience a dial tone delay and/or receive a busy signal; he
should redial in these instances. If, however, the SLSS does not receive a transfer
code within four seconds of answering, it rings the default port. The SLSS will
disconnect if the following occurs:
•
the telephone is not answered within 12 rings (12-50 rings).
•
a forced disconnect is received from the Central Office.
•
five seconds of dial tone are detected.
Substation Line Sharing Switch
Page 32