Technical Specification for - Gujarat Electricity Board
Technical Specification for - Gujarat Electricity Board
Technical Specification for - Gujarat Electricity Board
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TECHNICAL SPECIFICATION FOR<br />
SDH/PDH Equipment with integrated Access Multiplexer<br />
signals. - It must be possible to access the plat<strong>for</strong>m over a TCP-IP network. Access<br />
over SDH OHC channel using the OSI protocol shall be possible.<br />
Modules <strong>for</strong> direct connection to following USER SIGNALS shall be available as plug-in<br />
modules <strong>for</strong> the equipment:<br />
• Analogue subscriber interface: subscriber and exchange side<br />
• 4-wire E&M voice interface<br />
• G.703, 64kbit/s data Interface<br />
• X.24/V.11 (RS-422), N x 64kbit/s data interface<br />
• V.24/V.28 (RS-232), data interface<br />
• V.35, N x 64kbit/s data interface<br />
• RS485 data interface<br />
• Programmable data interface V.24,/V.28, V.35, X.24/V.11<br />
• Alarm collection interface<br />
• Teleprotection command interface<br />
• Optical protection relay interface C37.94<br />
• Binary signal (status and control) interface<br />
• 2Mbit/s electrical interface <strong>for</strong> unframed signals acc. to ITU-T G.703<br />
and framed signals acc. to G.703 and G.704.<br />
• LAN interface 10/100BaseT electrical interface RJ45, IP/Ethernet<br />
• LAN Interface <strong>for</strong> 100BaseFX and 1000BaseLX/SX, IP/Ethernet<br />
On TRANSPORT LEVEL the equipment shall support the following connection ports:<br />
• Up to 8 STM-4 SDH optical ports<br />
• Up to 16 STM-1 SDH optical ports <strong>for</strong> medium and long distances, with<br />
automatic laser shut down programmable on each interface.<br />
• Up to 4 STM-1 SDH electrical ports<br />
• Up to 8 8Mbit/s optical ports<br />
• Up to 16 2Mbit/s HDSL ports<br />
All optical ports shall support SFPs (small-factor pluggable unit) <strong>for</strong> short, medium, long<br />
and extra-long optical communication. ALS (Automatic Laser Shut-down) shall be fully<br />
supported.<br />
2.2.4.2 Teleprotection Requirements (To transmit/receive command on operation<br />
of distance protection Scheme of transmission line)<br />
The Teleprotection and communication system has to ensure the easy and secure<br />
function of the teleprotection. There<strong>for</strong>e following features have to be provided:<br />
• At least an 8 bit command addressing <strong>for</strong> teleprotection signal shall be provided<br />
to prevent tripping if the signal is inadvertently re-routed through the<br />
telecommunication network.<br />
• An automatic and periodic loop test (
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