Transcription of 4． ISDNユーザ・網インタフェースの概要 いる開放形システ …
1 4. (JT-Q931 JT-X25 (LAPB) Link Access Procedure on the D-channel Link Access Procedure-Balanced . :Terminal Equipment) : Digital Service Unit).
2 - 21 - .. 4. 48 (250 s ) 192kbit/s 64kbit /s 16kbit/s .. 100% .. (1) - 22 - FA(DSU TE ) B1 B2 F ( ) ( ) ( ) TE DSU FA ( )
3 2 TE DSU 2.
4 0 0 1 0 0 0 1 0 0 0 1 0 0 0 1 1 0 0 1 0 .. 420mW(40V) . - 25 - . 2B+D B=64kbit/s D=16kbit/s loss.
5 6dB at 96kHz (600m) (100 200m) 25 50m at 96kHz (400m) o-p . Terminal Equipment DigitalService Unit.
6 - 26 - . kbit/s 50ppm Duty 50%) .. Bipolar with 8 Zeros Substitution) . - 2 - 4. s kbit/s 4.
7 Cyclic Redundancy Checking-6 Remote Alarm In- dication 1111111100000000 - 2 - 4. e e e e e e
8 (Link Access Procedure on the D-channel) Terminal Endpoint Identifier - 2 - ( :Service Access Point Identifier 4.)
9 (1) (2) - 30 - (3) (4) (5) - 31.
10 4.
