Instruction manual

Page 1086 of 3156 CIS Toll Dial Tone Detection
553-3001-306 Standard 10.00 January 2002
The criteria is composed as a combination of two events: dial tone detection
and ANI interaction. It may include only dial tone detection, only ANI
Interaction, dial tone or ANI, dial tone and ANI. The criteria is defined at the
route data block level. The detection is performed by the CIS DTI2 cards
(NTCG01AC and NTCG02 AC) and when the criteria is satisfied the
Meridian 1 receives a report from the card. The Meridian 1 postpones the
outpulsing of the digits until the report. If the report does not arrive before the
ATO timer expiration, defined in Overlay 16, the outpulsing may continue,
or the call may be disconnected and busy tone provided to customer.
Outgoing toll CIS DTI2 calls can be made using the indirect or direct
connection method (see Figure 24 and Figure 25).
Figure 23
CIS network block diagram
CIS Public Switched Network
Telephony Network
Toll CIS Co