Operational Bulletin No. 660 (15.I.1998)
CHF 20.00
ID 100013206
Operational Bulletin No. 660 (15.I.1998) and Annexed List: List of data network identification codes (DNIC)(According to ITU-T Recommendation X.121)(Position on 15 January 1998) (15.01.1998)
Language: French, Spanish, English
Format: Win Word
Operational Bulletin No. 686 (15.II.1999
CHF 20.00
ID 100014569
Operational Bulletin No. 686 (15.II.1999) (15.02.1999)
Language: English, French, Spanish
Format: Win Word, Pdf, Zip
ISDN Field Trial Guidelines (1991)
CHF 38.00
ID 100002067
ISDN Field Trial Guidelines (1991)
Language: English
Format: Pdf, Win Word