NEC 2000 IPS manual Ccis and Isdn

Chapter 14 Common Channel Inter-Office Signaling (CCIS)

Common Channel Interoffice Signaling

	(1) 64 Kbps D Channel
Office		Office
A		B
	(23) - 64 Kbps Clear Channel Bearer Channels

Signaling	CCIS uses a common channel to provide the signaling information between two
	systems (nodes). The information transmitted in the signaling channel between two
	systems includes addressing information, supervisory information, and centralized
	network information. This signaling information is to be transmitted between all
	network nodes for a fully integrated network.
Addressing	This information includes dialed digits (called number) and calling party
	identification. CCIS provides the ability to provide calling number identification or
Information	the name of the calling party to any display station across the network. Users can
	screen calls by looking at the display prior to answering the call.
Supervisory	This information includes station status, call set up and termination information.
Information
Network	This information includes centralized billing information, system fault data
Information	messages, message waiting indication control information, voice processing
	integration information, and data related to other network feature control.

CCIS and ISDN

Since the first CCIS system was installed in 1985, CCIS has proven to be the most reliable and versatile proprietary network system available. The delays in achieving nation wide ISDN compatibility, and the fact that a total global ISDN network is not yet available, exemplify the true values of an intelligent proprietary CCIS network. Additionally, it is easy to understand that a global network that only needs to be compatible with one family of telecommunications products can easily offer much more feature transparency and centralization than a global network that is intended to be compatible with all telecommunications systems. For this reason alone, the benefits of a CCIS network are much greater than those of an ISDN network. And with CCIS, it is possible to create a mixed network of CCIS and ISDN.

UNIVERGE NEAX 2000 IPS Request For Proposal (RFP) Reference Guide	Page 14-3
Issue 6