INTRODUCTION
This Telecommunications Systems Builetin (TSB) applies to TiA/EIA/IS-637. It introduces the following modifications:
• 14.4kbps data rate support
• Service negotiation support
• IS-637 layering problem correction, editorial corrections
This TSB uses the same structure and section numbering as TIA/EIA/IS-637. Sections of this TSB that remain unchanged relative to TIA/EIA/IS-637 are represented using ellipses contained within brackets ([…])Modified sections are either reproduced in their entirety or use the […] notation to represent unchanged portions. Within modified sections, change bars indicate the specific paragraphs, figures, or table cells that have changed. Within modified paragraphs and table cells, strike-through indicates deleted text and underline indicates new text.
