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DEFINITY Made Easy Tools
Issue 2, November 2000
DEFINITY Hardware
TN577
The TN577 packet gateway (PGATE) provides 4 RS-423 physical ports for X.25 protocol interfaces between the system and adjuncts. In this application, PGATE functions as the data communications interface unit providing protocol conversion between the X.25 protocol and the mode 3 protocol carried across the LAN Bus.
The X.25 protocol (Levels 1 and 2) is terminated and the data reformatted into the ISDN packet mode protocol for transport across the LAN bus. Supported adjuncts include AUDIX, CMS, and Message Server Adjunct (MSA).
The TN577 also supports the Distributed Communications System (DCS) environment by providing X.25 signaling through 1 of the RS-423 physical ports, or back through the system using the TDM Bus to the appropriate DS1 or tie trunk circuit pack.
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| Copyright� 2000 Avaya Inc |
| Send comments to MadeEasy Development Team |
| Always check at the Made Easy Web site for the most current information. |