Technical Specifications for STM-1 (upto 63 E1)

Network Topology	Linear Ring
Network Element Configurations	Terminal Multiplexer (TMUX) Add Drop Multiplexer (ADM) Regenerator STM-1 Cross connect
Line Side (Aggregate) Optics	2 X STM-1 1310 or 1550 nm (ITU-T G.957 Compliant) 2xSTM-1e S/L 1.1, S/L 1.2
Tributary Interfaces	E1/DS1/E3/DS3 Electrical STM-1o STM-1e/140 Mbps 10/100 Ethernet
Modularity	Separate tributary cards Modular in design, capable of tributary upgrades in steps of 21 E1 or 1E3 Mix and match tributaries - E1, E3, DS3, 10/100 Ethernet
Cross Connect	252 X 252 VC-12 Fully non blocking Line to Line, Line to Tributary, Tributary to Line, Tributary to Tributary
Protection	SNCP/ 1+1 MSP (as per G.841) VC-12, VC-3 level path protection
Optional Hardware Redundancy	Power Supply Card
Maintenance	Higher-order and Lower-order POH, SDH level alarms and performance monitoring (as per G.826 and G.784) Local & remote loop back Software Downloads
Management	NES ( Network Element Software), supports full FCAPS functionality via web browser interface. SNMP interface for NMS RS-232 port for craft interface V.24/V.28 Modem interface for remote management In-band control supported using SDH Overhead 10/100Base-T/RJ45 management interface Alarm Signaling Indicators and External Contacts
Power Supply	Power Input: -48V DC nominal, -36V to 60V DC Power consumption: less than 20W (for 21E1 configuration)
Timing and Synchronization	Timing & Synchronization of System (as per G.813) Internal & External Timing interfaces: Two E1 BITS interfaces (G.703) Internal oscillator capable of supplying a G.813 compliant Stratum-3 SEC Support of SSM byte Accepts/ Provides 2Mbps/2MHz clock references
Order wire support and user data channel	E1 / E2 bytes used for Express order wire (Omnibus/Selective calling facilities) Five potential-free outputs and two potential-free inputs F1 byte for user data channel
Physical Dimensions	Dimensions (H X W X D) : 133 mm x 462 mm x 280 mm (5.25 in x 18.2 in x 11 in); Cab be mounted on a 19" or 23" or 600mm rack Weight: 2.5Kg
Enviromental	Operating Temperature: 0° to 50°C Relative Humidity: 10% to 90%, non-condensing

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