NEC NDA-24305 - page 240

CHAPTER 6 NDA-24305
Page 22 2
Revision 1.0
EVENT BASED CCIS - ISDN TRANSPORT
9. The following features are available only when the signal-channel link of the E-CCIS line is established:
• Cen tralized Bi ll ing-CCIS [C- 5 5]
• Centralized System Management Report – CCIS [C-57]
10. When a RELEASE COMPLETE message (Cause number 34 [No circuit/channel available] /44
[Requested circuit/channel not available]) or DISCONNECT message is received from an ISDN network,
route advance is executed according to the parameter R A (Order of Route Advancing) of AOPR command.
Route advance is available when a calling party is under the following status.
• Station without a held station/trunk
• Station with a held station
• Station with a held trunk
• Tandem Connection
• Attendant Console without a held station/trunk
• Attendant Console with a held station
• Attendant Console with a held trunk
However, route advance is not available in the following cases:
• Call origination from an ISDN terminal
• Tandem connection from an MFC trunk
• Data communication
When route advance is executed, the following services are not available:
• OFF-HOOK QUEUING [O-7]
• OUTGOING TRUNK QUEUING [O-2]
• INTER-OFFICE OFF – HOOK QUEUING [I-11]
• OUTGOING TRUNK BUSY ANNOUNCEMENT [O-21]
• ROUTE RESTRICTION – ANNOUNCEMENT [R-27]
• Dialing AUTHORIZATION CODE [A-21] from an ISDN trunk
4. Programming
STEP 1: Assign the Basic Dat a for ISDN. (Refer to Chapt er 3.)