K-CCIS – IP 2 - 777KK-CCIS – IPDescriptionThe system uses the PZ-32IPLA, PZ-64IPLA or PZ-128IPLA daughter board to connectmultiple systems together over a Data Communication IP Network (Intranet). Key-CommonChannel Interoffice Signaling (KCCIS) is used to provide telephony services between theUNIVERGE SV8100 and another UNIVERGE SV8100 or a NEAX PBX system.CCIS Networking via IP (Non Peer-to-Peer Connections Basis). IP trunk connections over CCIS Networking via IP provide telephony services betweenUNIVERGE SV8100 and UNIVERGE SV8100 and a NEAX IPS, IPX, SV7000 andUNIVERGE SV8300. The UNIVERGE SV8100 uses the NEC proprietary CCIS Peer to Peer protocol over IPto communicate between system to system. The PZ-(X)IPLA is required for connections between IP terminals and IP trunks. Onlyone PZ-(X)IPLA daughter board can be accommodated per system with a maximum of128 DSP resources per system.The PZ-(X)IPLA daughter board is an optional interface package for converting the RealTime Transfer Protocol (RTP) packets on the IP network to PCM highway. IP telephones arerequired to be connected directly to the IP bus. When IP telephones are required to beconnected to conventional PCM based digital circuit, the PZ-(X)IPLA converts IP packetsignals. The PZ-(X)IPLA provides the digital signal processors (DSPs) for IP stations andtrunks.A DSP provides format conversion from circuit switched networks (TDM) to packet switchednetworks (IP). Each voice channel from the circuit switched network is compressed andpacketized for transmission over the packet network. In the reverse direction, each packet isbuffered for de-jittering, decompressed, and sent to the circuit switched network. Each DSPconverts a single speech channel from IP to TDM and vice versa.The following are examples of DSP allocation: Calling from IP telephone to a TDM telephone uses one DSP. Calling from an IP telephone to another IP telephone that is registered to the same CPUuses no DSPs. Calling from a TDM telephone to a TDM telephone uses no DSPs. Calling from a TDM telephone and out an IP trunk uses one DSP.
