A comparison of three code schemes for supplementary telephone services : Cox, A.C. Post Office Research Centre, Martlesham Health, Ipswich, Post Office Telecommunications Research Department, Report No 802, 1980, 32 pp.

• Publisher: Elsevier Science
• Year: 1982
• Tongue: English
• Weight: 143 KB
• Volume: 13
• Category: Article
• ISSN: 0003-6870
• DOI: 10.1016/0003-6870(82)90145-4