Automatic Callback (ACB)

Automatic Callback (ACB)
After reaching a busy/DND station, you can set ACB to have the system call you back when the called station becomes available. You can also set ACB to place you in a queue for an available CO line, if you reach a line group in which all lines are busy.
® To set ACB
1. After reaching either a busy/DND station or CO line, press $XWR&DOOEDFN ...or . You hear busy tone, followed by dial tone (two secs.), then busy tone. When you set ACB at a busy station, its number (210) displays. When you set ACB at a busy line group, its access code number (801) is displayed. 2. Hang up ...or press 6SNU. You can make other calls while waiting for the called station/ line to become available. 3.Your telephone rings at a fast rate when the called station or CO line becomes idle. For busy/DND station: the [DN] LED flashes green (incoming call). The station number you called (210) displays. For busy CO line: the [DN] LED from which you attempted to first access the line flashes red (incoming call rate). The seized line’s number (3) displays. NO. 204 INT 210 ACB SET NO. 204 INT 801 ACB SET 210 ACB NO. 204 LINE 3 ACB NO. 204
Strata DK Digital Telephone 5/99