NEC 2000 IPS manual Common Channel Inter-Office Signaling Ccis

Chapter 14 Common Channel Inter-Office Signaling (CCIS)

The UNIVERGE NEAX 2000 IPS offers a very powerful proprietary networking feature called Common Channel Inter-Office Signaling (CCIS). This functional and extremely flexible

“intelligent network” capability allows two or more UNIVERGE telecommunications systems to be networked together to provide feature transparency and to centralize many important telecommunications functions such as Attendant Consoles, Call Accounting / Billing Systems, Voice Processing Systems, Management systems, and Trunk Facilities, to name a few.

A variety of NEC’s UNIVERGE family of telecommunications systems can be networked together using CCIS, creating a proprietary corporate network. This network can serve multiple company facilities in the same building or town, in different towns, in different states, and even in different countries. Centralized services provide a great cost reduction in the initial system hardware costs, ongoing maintenance costs, trunk and tie line costs and overall operations costs. Feature transparency increases user productivity by providing a common numbering plan for simplified on-net calling and a common feature package. Feature transparency allows most features to be accessed using similar procedures throughout the local, national, or global corporate network.

Alternate Routing capabilities provide increased network reliability, additional cost savings, and increased user productivity. Based on the industry standard CCITT Signaling System #7, which is the frame work for ISDN, CCIS offers 64k “Clear” channel voice/data transmissions. The CCIS “Intelligent Network” can be configured to provide redundant signaling channels and multiple alternate routing schemes for maximum network reliability. CCIS is so flexible it can be used with standard digital T1 spans, analog tie lines, or satellite transmission systems.

The CCIS architecture is similar to ISDN. Both use 23B + D type trunks. Both networking types conform to and comply with the Open Systems Interconnection (OSI) 7 Layer Model.

The UNIVERGE NEAX 2000 IPS can be interfaced to another UNIVERGE NEAX PBX by No. 7 CCIS Signaling (Analog/Digital), CCIS Networking via IP (non Peer-to-Peer connection), or via IP (Peer-to-Peer connection). For adding No. 7 CCIS to the system, it is necessary to install the 24 channel DTI (Digital Trunk Interface) for a digital network or LDT (Loop Dial Trunk)/ODT (2 wire E&M or 4 wire E&M Trunk) for an analog network via a MODEM, and a PLO (Phase Locked Oscillator) for network synchronization. Also, it is necessary to install a CCH (Common Channel Handler). The CCH receives/transmits common signaling data to/from the distant office. In each local office, the PBX can provide Centralized Billing function in addition to a variety of inter-office service features. For addition of the Centralized Billing function, an AP

(Application Processor) is required when the UNIVERGE NEAX 2000 IPS is the center office and Built-in SMDR when the UNIVERGE NEAX 2000 IPS is used as a tandem or local office.

Note: Centralized Day/Night Mode Change and Centralized Fault Message require CCIS No.7 networking with the IPX.

UNIVERGE NEAX 2000 IPS Request For Proposal (RFP) Reference Guide	Page 14-1
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