Chapter 14 Common Channel Inter-Office Signaling (Ccis) - NEC NEAX 2000 IPS Reference Manual

Chapter 14 Common Channel Inter-Office
Signaling (CCIS)
The 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 NEAX 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 NEAX 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 NEAX 2000 IPS can be interfaced to another 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 NEAX 2000 IPS is the center office and Built-in
SMDR when the NEAX 2000 IPS is used as a tandem or local office.
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Note Centralized Day/Night Mode Change and Centralized Fault Message require CCIS No.7 networking with
the IPX.
NEAX 2000 IPS Request For Proposal (RFP) Reference Guide Page 14-1
NDA-24349, Issue 4