NEC NEAX NDA-24349 - Manual (Page 294)

Chapter 14 Common Channel Inter-Office Signaling (CCIS)
Page 14-2 NEAX 2000 IPS Request For Proposal (RFP) Reference Guide
NDA-24349, Issue 4
For D term IP to D term IP connection via CCIS (Peer to Peer connection), the voice data is
transmitted and received directly between D term IPs via Intranet (CCIS via IP). For D term IP to
Legacy terminal connection via CCIS, the IP-PAD card is required to transmit and receive the
voice data. This card is used to control and convert the voice to data. The control signals are
managed by the MP card in either of the connection above.
The illustration below shows a system outline of CCIS Connection.
System Outline of a CCIS Connection