Toshiba 2000-series 用户手册

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页码 164
Features
Two (Tandem) CO Line Connection
Strata DK Digital Telephone   6/00
83
Supervision
To supervise a tandem call and release it
5. Press 
&QI7UQ
 and 
hang up.
You hear dial tone. Both Line 
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.
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 (see 
).
1. Press [DN]
...or 
/LQH
...or 
3RROHG/LQH
*US
.
You are connected to both CO 
lines. Both Line LEDs flash 
(in-use rate). 
N1
 and 
N2
 
identify the connected CO 
lines.
2. If the parties have 
hung up, go back on-
hook
...or if the parties are 
still talking, press 
&QI7UQ
 and hang-
up.
Both Line 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