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Two (Tandem) CO Line Connection
Strata DK Electronic Telephone 5/00 73
➤ To supervise a tandem call and release it
5. Press
&21)7516
and hang up.
You hear dial tone. Both
CO LEDs continue to flash
(exclusive-hold rate) and
the two lines are connected.
N1 and N2 identify the
connected CO lines.
The LED turns OFF when the parties hang-up.
Note If the public telephone company provides auto
disconnect, the connection may release
automatically when the parties hang up. If not,
the lines must be supervised to be
disconnected.
1. Press [DN]
...or &2
...or 3/.
You are connected to both
CO lines. Both CO LEDs
flash (in-use rate).
N1 and
N2 identify the connected
CO lines.
2. Go back on-hook if
the parties have hung
up
...or press &21)
7516
and hang-up
if the parties are still
talking.
Both CO LEDs turn OFF, and the connection is
released.
TRK-TRK N1 N2
JAN 10 THU 11: 57
TRK-TRK N1 N2
JAN 10 THU 11: 57