Instruction manual

Digital Trunk Interface – Commonwealth of Independent States Page 1263 of 3156
Features and Services
Operating parameters
CDTI2 and CSDTI2 cards do not support Periodic Pulse Metering,
continuous pulse detection, or echo suppression.
The only line signaling supported for CIS is a two-bit ABCD protocol.
The data in ANI always refers to the originator of the outgoing call. If the call
is transferred, the ANI information is not changed and therefore may be
different than that of the set currently involved in the call.
On outgoing toll calls, there is no delay. On outgoing local calls, there is a 700
millisecond delay in the Answer signal recognition before the call is
established.
Incoming and outgoing trunks cannot be mixed within the same route.
Toll Operator Break-In/Trunk Offer is not supported.
Toll Operator Manual Ringing is not supported.
MF Shuttle Register Signaling is not supported.
CSDTI2 cards are required for the Option 11C, while CDTI2 cards are
required for all other machine types.
Only ANI transmission is supported.
Feature interactions
Authorization Code
An extension may refer to an Authorization Code to seize an outgoing CIS
DTI trunk. The Authorization Code category is used to build the Automatic
Number Identification (ANI) message. Thus, a set having a CIS restricting
call category can complete a call to the Public Network using the
Authorization Code.
Automatic Trunk Maintenance
This feature is not supported on CSDTI2 due to the absence of tone detectors
on the Option 11C.