Multimedia Services by Cable
Richard Catchpole, Nortel Networks
Study Group 9
April 25, 2001
“IPCablecom”
IPCablecom covers SG9 Recs. on IP cable comms.
IPCablecom defines architecture and interface specs.
IPCablecom builds on SG9’s J.83/J.112 cable modem
transport (DOCSIS 1.1, EuroDOCSIS, DVB)
IPCablecom initial focus is on IP telephony
IP Cable Comms. Stds. Coord.
Europe
an Cab
le
Comm
. Asso
(ECCA c.
)
Euro Telecom
Standards Inst.
(ETSI)
bs
a
L
ble
Ca
ITU-T SG9
IPCablecom
Recommendations
European
Broadcast
Union
B
V
D
o
Pr
ty of m
e
i
c
So
leco
e
T
)
le &
Cab g. (SCTE
En
Other ITU-T
SG’s & IETF
WG’s
ct
e
j
Japan
ETSI Technical Bodies
most concerned with IP Cable
Communications
E TS I O C G
J TC -B road c as t
TC -A T
TC -S P A N
TIP H O N
IPCablecom Service Possibilities
z Residential/Business
IP Telephony
z Video
IP telephony
z Voice/data/video unified messaging
z Enhanced conferencing and media services
z Entertainment Services
– Real-time multiplayer interactive gaming
IPCablecom Service Vision
Application Services
Internet
Telephony
Client Devices
Ongoing
InitialDevelopment
Recs
Business/SOHO
Voice/Data/Video
Interactive
Gaming/
Entertainment
MTA
Set-Top
Box
IPCablecom
Network
PC
IPCablecom Components
AN
HFC
Call
Management
Server
CM
PSTN
Gateway
Managed IP
Network
CM
MTA
Embedded
MTA
CM - Cable Modem
MTA - Multimedia Terminal Adapter
HFC - Hybrid Fiber Coax Network
AN - Access Node
PSTN
Back Office
Servers
Baseline Recommendations
Enable “Zones” of Interoperability
Gateway
PSTN
V
Operator A
Zone
CMS
Gateway
PSTN
Gateway
V
Operator C
Zone
PSTN
V
Operator B
Zone
CMS
CMS
Baseline Recommendations
z Draft
J.160 - IPCablecom Architecture
– Defines requirements for the integrated IPCablecom
architecture
– Provides a roadmap for other IPCablecom
specifications
– Status: “Determined”, live correspondence with SG11
Baseline Recommendations
z J.162
- Network Based Call Signaling
– Client to Network (MTA-CMS) Signaling
– Variant of MGCP
– Optimized for the Cable access environment
z Supports simple, thin clients
z Integrated protocol support for J.dqos, J.sec
– Extensible through the addition of event packages
– Status: “Approved”
Baseline Recommendations
z J.163
- Dynamic Quality of Service
– RSVP used to establish QoS between MTA and AN
– COPS for Gate Control between CMS and Access
Node
– CMS-AN interface minimizes theft of service
– Transport-specific mechanisms are specified in
Annexes
– Status: “Approved”
Baseline Recommendations
z J.161
- Audio Codecs
– RTP for real time transport of media streams
– Low (G.729), medium (G.728), and high (G.711)
bitrate codecs. Only G.711 is required
– DTMF transmission is in-band
– Status: “Approved”
Baseline Recommendations
z J.164
- Event Messages
– Initial message set supports event capture and generation
–
–
–
–
for voice services
Extensible to support additional services
Events generated by trusted elements - CMS, AN, MGC
and received by RKS
Real-time or batch
Status: “Approved”
Baseline Recommendations
z J.167
- MTA Device Provisioning
– DHCP, DNS, SNMP, TFTP used to provision client
and download MTA configuration file
– Security relationship established between MTA and
CMS(s)
– MIB mechanisms defined in J.166 (MIB Framework),
J.168 (MTA MIB), and J.169 (NCS MIB) support
MTA device provisioning
– Status: “Approved”
Baseline Recommendations
z Draft
J.170 - Security Interfaces
– Comprehensive and robust mechanisms for signaling
–
–
–
–
–
and media security
Security is an integral part of the architecture
Signaling interfaces protected with IPSEC
Media encrypted using RC4 stream cipher
MTA Device Authentication uses X.509 digital
certificates
Status: “Determined”, live correspondence with SG16
Baseline Recommendations
z Draft
J.171 - Trunking Gateway Control
Protocol
– Media Gateway Controller to Media Gateway Signaling
– Annexes created to accommodate variations in trunking
interconnection requirements
z Annex A based on MGCP/NCS
z Annex B based on H.248 (for further study)
– Status: “Determined”, live correspondence with SG16
Baseline Recommendations
z Draft
J.165 - Internet Signaling Transport
Protocol
– Media Gateway Controller to Signaling Gateway
– Normative support for ITU-T SS7
– Non-normative appendix to accommodate variations in
SS7 signaling interconnection requirements
– Status: “Determined”, live correspondence with SG11
Baseline IPCablecom
Recommendations
z Architecture
– Draft J.160 (arch)
z Signaling
– J.162 (ncs)
– Draft J.171 (tgcp)
– Draft J.165 (istp)
z Quality of Service
– J.163 (dqos)
z Media/Codecs
– J.161 (acr)
z OSS
–
–
–
–
–
J.164 (em)
J.167 (mtadpv)
J.166 (mibfrw)
J.168 (mtamib)
J.169 (ncsmib)
z Security
– Draft J.170 (sec)
Testing Process
Business
Reqts.
Requirements.
Management
Specs.
Test
Plans
• 150 people
• 80 companies
• 30 documents
• 20 teams
Test Case
Implementation
Execution
& Results
Primary Line Recommendations
Powering & Availability Guidelines
Gateway
PSTN
SNMP
V
V
Operator A
Zone
CMS
Gateway
PSTN
Gateway
V
SNMP
Operator C
Zone
PSTN
V
SNMP
Operator B
Zone
CMS
V
CMS
V
Interdomain Communications
Exchange Traffic Directly Over Managed IP Backbones
Gateways
PSTN
Border
CMS
V
Border
CMS
Operator A
Zone
Operator B
Zone
Managed
IP Backbone
Gateways
Border
CMS
Gateways
PSTN
Operator A
Zone
Operator C
Zone
V
Local Zones
Administrative Domains
PSTN
V
IPCablecom Plan
z Core Architecture
– Baseline Recommendations (8 approved, 4 determined)
z Integrated system for single zone voice capability
z Signaling, QoS, Codecs, Billing, Provisioning, Security
– Primary Line Recommendations (planned)
z Powering, monitoring, and availability guidelines
– Interdomain Communications (planned)
z Allows operators to exchange traffic over IP networks
z Enhanced Multimedia Capabilities (future)
– Telecommuting, videoconferencing, interactive gaming, etc.
Questions?