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Basic Programming
Form 33: Enter appropriate DISA access codes.
Programming T1 and PRI trunks as DISA trunks
1. Program the trunk(s) as T1 E&M. (A T1 E&M circuit descriptor is not
required.)
2. Form 02, Feature Access Codes
- Program Feature Number 19 (Direct Inward System Access) with
a number that is within the DID range.
3. Form 03, COS Define
- Enable COS Option 606, Telephone - Enhanced Answering
Position (provides answer supervision to telco when the SX-200
ICP provides it dial tone).
4. Form 19, Call Rerouting Table
- Program the DISA access code from Form 02 as the DISA Day
Service Routing for this Tenant.
Programming ANI/DNIS on an Incoming trunk
ANI (Automatic Number Identification) - the local carrier sends the phone
number of the calling party to the PBX.
DNIS (Dialed Number Identification Service) - the local carrier sends the
digits dialed by the calling party to the PBX.
ANI/DNIS is available only to incoming trunks with trunk descriptor
“T1-E&M” and “T1-DID/TIE”, which accept DTMF signaling and have the
wink timer active.
Notes:
1. If the DISA trunk is a loop-start CO trunk, then loop- start
interconnection rules apply and the restrictions on-loop start CO
trunks applies.
2. Four-circuit/Eight-circuit LS/CLASS trunks can also be
programmed as DISA trunks.
Note: The following does not apply to PRI trunks.