Chapter 3. System Features
To make a DISA call to an outside number:
1. From an outside location, enter the DISA trunk number.
2. If an incoming DISA code is assigned enter the DISA code
(up to 10 digits). Otherwise, proceed to step 3.
3. Enter the Trunk group number (9 or 81-84)
4. Dial the phone number.
FF1-0-26: DISA Incoming Code
FF1-0-26: DISA Outgoing Codes and TRS Assignments
FF1-0-04: Class of Service (DISA ID Check)
FF2: Ring Type
Busy override cannot be used for a DISA line.
DISA can be used to access extensions as well as outside numbers.
Paging cannot be accessed from a DISA line.
While dialing an extension number, the * key may be entered to cancel dialing and return to dial
tone. The # key may be entered to disconnect.
Distinctive Ringing sets CO calls to ring with a distinctive ring based on the trunk. This "ring" also
identifies the call as an outside call instead of an inside call.
Beginning with CPC version 2.0, calls to a key telephone or DSLT can also be set to distinctive
ringing on an extension basis.
FF2-0: (Trunks) Ring Pattern and Frequency
FF3-0: (Extensions) Ring Pattern and Frequency
FF1-0-04: (System) Trunk Class of Service
DBS 576 (USA), issued January 1999
Section 700 - Operation
DISA dial tone