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If the telephone is not answered in 1-50 rings (default is 12 rings) or a forced
disconnect is received from the Central Office, or dial tone is detected, the SLSS
disconnects. If you enter a transfer code before the default port answers, your call
will be sent to the port you specified.
If the SLSS does not receive a transfer code within the default four seconds, it
routes the call to the default port. If the default port does not answer the call, you
can enter a transfer code to route your call to another port. If a transfer code is
received, the SLSS rings the appropriate port.
Interrupted Incoming Call at the SLSS
If a phone goes off-hook on Port 1 before an incoming call is connected to a port,
the SLSS connects Port 1 to the incoming call, and looks for a transfer code. After
receiving the transfer code, calls are handled according to the assigned priority
access mode (No, Total, or Emergency Priority).
If a phone goes off-hook on Port 1 and the SLSS is programmed for No Priority,
the call will be routed to the appropriate port, and Port 1 will receive busy tone.
If in Total Priority Mode, a phone goes off-hook on Port 1, the SLSS will
disconnect the incoming call and connect Port 1 to the Central Office line. In this
mode, lower numbered ports always have priority over higher numbered ports;
Port 2 can interrupt an incoming call on Port 3, and Port 3 can interrupt Port 4,
etc.
If in Emergency Priority Mode, a phone goes off-hook on Port 1, the SLSS sends
dial tone to Port 1 for the user to dial one of the programmed emergency numbers.
The SLSS won’t route the incoming call until either the caller is denied access due
to an invalid number, or 5 seconds pass since the last digit was dialed. If number
is valid, the SLSS disconnects immediately.
Substation Line Sharing Switch
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