Technical information

Technician’s Handbook
132
Programming ANI/DNIS on an
Incoming Trunk
ANI (Automatic Number Identification) - the local carrier sends to the
PBX the phone number of the calling party.
DNIS (Dialed Number Identification Service) - the local carrier sends to
the PBX the digits dialed by the calling party.
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.
Only MCI and US Sprint Standards are supported. MCI sends the ANI
digits without delimiters. Sprint delimits the DNIS and ANI digits with
asterisks.
DNIS digits on a dial-in trunk are used to route that trunk call, and no
further digits will be expected.
1. Create an ANI/DNIS trunk by creating a separate COS . Set the fol-
lowing options in the trunk's Class Of Service:
 COS Option 811 - ANI/DNIS Trunk to ENABLED
 COS Option 801 - Incoming Trunk Rotary to DISABLED
 COS Option 800 - ANI Applies to DISABLED
 COS Option 246 - SMDR Extended Record to ENABLED (for
SMDR to report the ANI and DNIS digits).
2. In the Trunk Circuit Descriptor parameters set
 Incoming Start Type to Wink
 Wink Timer to 100-350 for MCI
and 140-290 for US SPRINT
 Debounce Timer to 100 ms or greater.
3. To define which information will be displayed on the sets, ANI, DNIS,
both, or none (standard trunk label display), select the required
following COS options: