NEAX2400 IPX ISDN Features and Specifications
NDA-24311, Issue 1 Page 151
Call Completion on No Reply (CCNR) C-152
C-152 Call Completion on No Reply (CCNR)General Description
This service (Supplementary Service - Call Completion on No Reply (SS-CCNR), based on ETS 300 366), allows
the Camp-On service through the Q-SIG network. When the called station does not answer, the calling station can
set CCNR. When this service is set, the calling station rings back as soon as the called station becomes idle, and
upon answering, the desired station is automatically rung.
Operating Procedure
To set CCNR (Call Completion on No Reply)
1. Dial the desired telephone number; hear ringback tone.
2. Press hookswitch and dial the CCNR set code; receive service set tone. If the caller is using Dterm, press
the Camp-On key.
3. Replace the handset.
To cancel CCNR
1. Lift the handset; receive dial tone.
2. Dial the CCNR cancel code; receive service set tone. If the caller is using Dterm, press the Camp-On key.
3. Replace the handset.
Note: Since there is no standard operation provided by ETS 300 366, the operation depends on the terminals used by the
caller.
Service Conditions
1. Q-SIG CIRCUIT SWITCHED BASIC CALL - ETSI VERSION [Q-4] should be available.
2. This service is available in the network where the end to end Q-SIG link is establis hed. (It is not available
using the other signaling systems.)
3. This service is activated based on SS-CCNR provided by ETS 300 366, and the methods are used:
a.) Path reservation: non-reservation method or path reservation method (selectable)
b.) Retention of signaling connection: connection retention method
c.) Service retention: service cance llation method
4. The bearer capability and data transmission specifications are as follows:
a.) Data transmission speed: 64 kbps
b.) Bearer Capability: voice, 3.1 kHz audio, 7 kHz audio
Service Conditions of the calling station
1. When the calling station is in the following status, CCNR cannot be set:
a.) when the station has set Camp-On, or wh e n Camp-On is set to the station
b.) when the station has set Camp-On - CCIS, or when Camp-On - CCIS is set to the station
c.) when the station is holding a call (CALL HOLD [C-6])
d.) when the service is restricted.
2. This service can be set only from the Dterm or the DP station.