Packet Cable is consortium and association of industry being founded by CableLabs with goals of standard definition for modem cable television industry accessibilities. CableLabs in turn leads these initiatives for interface interoperability specifications for delivering multimedia real time services over 2 way cable networks. It is built on top of industry’s cable modem Data over Cable Service Interface Specifications (DOCSIS) infrastructure. Packet Cable network uses (IP) Internet Protocol for enabling wide ranges of services of multimedia like interactive gaming, (IP telephony) Voice over IP, multimedia general applications and multimedia conferencing. DOCSIS networks with Packet Cable Network extensions enable cable operators delivering voice and data traffic using efficiently single high speeded (QoS) quality-of-service cable broadband enabled architecture. Packet Cable Network efforts date back to 1997 year when cabling operators identify needs for multimedia real time architectures. This supports modern multimedia services delivery over architecture of DOCSIS. Packet Cable Network has original specifications on basis of network physical characteristics of operators in US for European market, EuroPacketCable on basis of European implementations of network and Cable Europe Labs for maintaining separate by equivalent efforts.
Overview technically: Packet Cable Network interconnects 3 networks namely Public Switched Telephone Network (PSTN), TCP/IP Managed IP Networks and Hybrid Fibre Coaxial (HFC) Access Network. Packet Cable Network protocols: There should be (RTCP) Real Time Control Protocol and (RTP) Real time Transport Protocol needed for media transfers. There should be PSTN Gateway Call Signalling Protocol Specification (TGCP) that is MGCP extensions for Media Gateways. There should be Network based Call Signalling Protocol Specification (NCS) that is MGCP extensions for residential analog Media Gateways. NCS specification is derived from IETF MGCP RFC 2705 with details of VoIP signalling. IETF versions are basically NCS version’s subset. Packet Cable groups have defined more features and messages than IETF. There should be Common Open Policy Service (COPS) for Quality of Service. There should be DOCSIS standards for data over cables and details on RF bands mostly. Packet Cable Voice Codecs per Packet Cable Codec Specifications: Required things are ITU G.711 for V 1.0 and V1.5 (a-law and micro-law both), iLBC for V1.5 and BV16 for V1.5. Recommended things are ITU G.729 Annex E and ITU G.728. There can be any optional things.
PacketCable 1.0: This PacketCable 1.0 comprises of 6 technical reports and 11 specifications. It defines Quality of Service (QoS), call signalling, interconnection of Public Switched Telephone Network (PSTN), Codec, interfaces of security, billing message collections of events and client provisioning needed for implementing single zone’s PacketCable solutions for (IP) Internet Protocol residential voice services. PacketCable 1.5: This PacketCable 1.5 has capabilities additionally not existing in PacketCable 1.0. It supersedes versions previously namely V1.1, V1.3 and V1.2. PacketCable 1.5 consists of 1 technical report and 21 specifications. It defines together Quality of Service (QoS), call signalling, interconnection of Public Switched Telephone Network (PSTN), Codec, interfaces of security, billing message collections of events and client provisioning needed for implementing multi zone’s or single zone’s PacketCable solutions for (IP) Internet Protocol residential voice services. PacketCable 2.0: This PacketCable 2.0 introduces IMS Release 7 IP Multimedia Subsystem to architectural cores. Packet Cable thereby uses IMS simplified in few areas in turn enhancing it in few cable specific places. Packet Cable defines Delta Specs being related with very important IMS Specs from 3GPP.
Deployment: VoIP services are based on architecture of PacketCable widely being deployed by operators like Cogeco: Cogeco Home Phone (Canada), Time Warner Cable: Digital Phone (System wide), Cox: Cox Digital Telephone (System Wide), Bright House Networks (Florida), GCI (Alaska), Optus- SingTel Optus Pty Ltd (Australia), Liberty Cablevision (Puerto Rico) and Comcast: Comcast Digital Voice System wide).