The miniature multiplexer in TM-77 desktop version and MD-77 card version for the multipurpose TM-72 rack provides transmission of 4 independent digital data fluxes at the bit rate of 2.048 Mbit/s (G.703) via a fiber optic line. The device is capable of long-range transmission of E1 channels enabling you to connect business centers or customer groups via a backbone network (SDH, ATM). A high power budget enables signal transmission between the devices over a distance up to 85 km. The multiplexers are applied in data transmission, indirectly in video conferences and IP network connections. A single device or a group of devices is managed outside the transmission band (a seperate independent transmission channel in a common transmission carrier is used) using the LanWin application under Windows 9X/2000/NT. RS-232 interface or IP network is used for management. Additionally, the local device is managed via VT-100 terminal (RS-232).
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Local interfaces:
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Component signal binary bit rate: 4 x 2.048 Mbit/s, G.703
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Linear code in component signal interfaces: HDB-3
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Input/output impedance, connector type for TM/MD-77 version: 120 Ohm/sym., DB-25
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Maximum station cable attenuation for E1 channels: 6dB
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Linear interfaces:
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Type of optical fiber /type of fiber optic connector (linear optical port): single-mode / FC-PC
