2Wire AU2700, AU5400 specifications

	Table of contents
		page
1. Outline		4
2. Basic Specification		5
2.1	Format of Transmission	5
2.2	Transmission code	5
2.3	Text format	6
3.Transmission Text Format		9
3.1	Common and changeable item	9
3.2	T.R.I. inquiry text	9
3.3	T.R.I. text	11
3.4	Test result transmission text	12
3.5	Relation between real-time/batch and Transmission text	21
3.6	Others	22
4. Transmission Protocols		30
4.1	Protocols at AU2700/5400	30
4.2	Timing/time-out	33
4.3	Rule of class B	35
5.Application Protocol		37
5.1	Receiving T.R.I	37
5.2	Sending test result protocol	40
5.3	Others	42
6. Specification of Connection		43
6.1	In/Output signals and Terminals	43
6.2	Signal Level	43
6.3	Applicable Connector	43
6.4	others	43
A. Appendix…………………………………………………………………………………………………………………..44
1.	Flags list	44
2.	Online parameters list	46
3.	Character table	49
4.	Online parameter sheet	50
5.	Online alarm list	52

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