NEC NEAX 2000 IPS - Number of Time Slots Required for DTI;CCH Card

CHAPTER 1 GENERAL INFORMATION
– 24 – NWA-008853-001 Rev.3.0
97ch1001.fm
Number of Time Slots Required for DTI/CCH Card
(1) When the system is serving as a Lower Hierarchy Office within the network, 1 time slot is allocated
for setting up a fixed path between the DTI/ODT and the CCH as the common signaling channel.
(2) When the system is serving as a High Hierarchy Office within the network, 1 time slot is allocated
to the distant Main Office and distant Local Office for the common signaling channel.
NOTE 1: A billing information from distant Local Office is transferred as follows.
AP00 → MP → CCH
NOTE 2: When a common signaling data link is provided via a MODEM, the time slot for the common
signaling channel is not required.
TIME SLOT ASSIGNMENT CONDITION