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Position: Chinese Standard in English/TB/T 1689-1993
TB/T 1689-1993   Railway Telephone Switching Network - Inband Pure Tone Pulse Line Singaling (English Version)
Standard No.: TB/T 1689-1993 Status:valid remind me the status change
Language:English File Format:PDF
Word Count: 3000 words Price(USD):90.00 remind me the price change
Implemented on:1993-10-1 Delivery: via email in 1~3 business day
Standard No.: TB/T 1689-1993
English Name: Railway Telephone Switching Network - Inband Pure Tone Pulse Line Singaling
Chinese Name: 铁路电话交换网 带内单频脉冲线路信号方式
Chinese Classification: S71    Railway communication network
Professional Classification: TB    Professional Standard - Railway Transport
Issued by: Ministry of Railways
Issued on: 1993-4-22
Implemented on: 1993-10-1
Status: valid
Superseding:TB 1689-1985
Language: English
File Format: PDF
Word Count: 3000 words
Price(USD): 90.00
Delivery: via email in 1~3 business day
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