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Tieline TLX21 X.21 Network Interface Module for for G3 Series Codecs

 
  • Dale #:

    TIEL-TLX21
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Description

X.21 is a protocol that runs over subscriber networks (i.e. leased line connections). It is an ITU-T data interface standard for connecting a DTE (i.e. Tieline codec) to a DCE (terminal adapter) and transferring synchronous serial data. It can operate as a full duplex connection with data rates f... Read More

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Description

X.21 is a protocol that runs over subscriber networks (i.e. leased line connections). It is an ITU-T data interface standard for connecting a DTE (i.e. Tieline codec) to a DCE (terminal adapter) and transferring synchronous serial data. It can operate as a full duplex connection with data rates from between 9,600 bps to 2 megabits. The properties of X.21 define the physical, electrical and call control procedures for interfacing using this standard. The basic interface signals performed in most X.21 signalling include transmit, receive, control, indicate and timing. X.21 connections use balanced data, clock and control signal lines and have been fully integrated into Tieline codecs.

64 - 384 kbps connections are most common and Tieline codecs support X.21 leased line connections from 64 - 2,048 kbps. The physical interface to a Tieline codec module is via a straight-through DB15 cable and the connection profiles supported are mono, stereo, dual mono and mono/IFB. Choose your connection algorithm from G.711, G.722, MPEG 2 Layer 2 (MP2), and Tieline Music or MusicPLUS.

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Product Specs

Models G3 family of codecs
Format X.21 leased line mode with C/DTR call establishment over 64-384 kbps connections . The connection profiles supported are mono, dual mono stereo and joint stereo. Choose from G.711, G.722, MPEG 2 Layer 2 and Tieline Music Algorithms (Tieline Music is capable of 15 kHz mono or stereo over 64kbps or 128kbps with 70ms delay) A network adaptor cable may be used for conversion to V.35 protocol

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