NEC DS1000 - Manual (Page 59)

To place a call over a specific line (using Line Dial-Up or
Direct Line Access):
1. Press .
2. For Line Dial-Up:
Dial + + line number (e.g., 01 for line 1).
OR
For Direct Trunk Access:
Dial + line number (e.g., 01 for line 1).
3. Dial the outside number you want to call.
Toll Restriction may prevent you from dialing cer-
tain outside numbers.
If you use a dial pulse line and wait 6 seconds
after dialing a digit, the system outdials any remain-
ing digits as tone (DTMF).
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Central Office Calls, Placing
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