Filter
Top Products
SNA 4600
Standalone ARM Network Adaptor
Configuration
guide
Issued by Network Products Marketing Department
GSNA4600 - 09/1999
THOMSON broadcast systems - All rights reserved
p. 2 of 11
Product overview
SNA 4600 performs the processing of
MPEG-2 DVB Transport Stream and
other data services for transmission
on PDH/SDH networks under ATM
layering. It is a self-contained system,
perfectly suited for
broadcasters’ needs
Key features:
Ä A unique network interfaces family
Ä Self-contained system
Ä Powerful ATM multiplexing
Ä Multiple service capability
Ä Dial-up connection capability
Ä Full duplex transmission
Ä ATM Adaptation Layers type 1 and
type 5 for real time services
Ä Local and remote control capability
Ä DVB, ITU-T and ATM Forum
standards compliant
The SNA 4600 Standalone Network Adaptor connects costumer’s TV equipment to leased lines,
to PDH and to SDH networks but also to ATM networks enabling dial-up transfer of professional
TV at user-selected quality. Allowing processing of other data streams, it features a versatile
multiple service communication network interface.
The SNA 4600 supports serial or parallel MPEG-2 TS, as well as G703 2, 8, 34 or 45 Mbps data
stream tributaries. AAL1 or AAL5 layering may be chosen depending on customer needs and
requested Quality of Service.
The ATM multiplexed services are inserted into a single PDH stream (E3, DS3 or E4) or into an
SDH VC4 virtual container. The SDH output can be configured with either electrical or optical
interfaces.
It is designed as a 3 RU-19", self-contained sub-rack unit. It can be populated with up to 8 boards,
by combining MPEG TS or data streams tributary ATX and ARX cards, and up to two User
Network Interfaces (UNI) boards.
It can be controlled and monitored either from the front panel keypad and illuminated LC Display,
or remotely from the DBE 2930 proprietary manager system through an RS 485 linked DBE 2910
Mediation Unit.
SNA 4600 Functional Block Diagram
AAL1 or AAL5
ATM
cell mapping
ASI / PSI(LVDS) or G 703 Serial
MPEG-2 TS or G 703 Data
Streams
34Mb/s, 45 Mb/s, 140 Mb/s PDH or 155 Mb/s SDH
E3, DS3, E4 or STM1G 703
Electr
.
or STM1 MM-FO
or STM1 G957 SM-FO
Tributaries
Interfaces
ATM
Adaptation
ATM
Mux
/
Demux
Network
Interfaces