ITU-T E 111-1993 Extension of International Telephone Services《国际电话业务的扩展》.pdf

INTERNATIONAL TELECOMMUNICATION UNION)45G134 % TELECOMMUNICATIONSTANDARDIZATION SECTOROF ITU4%,%0(/.%G0G0.%47/2+G0G0!.$G0G0)3$./0%2!4)/. G0G0.5-“%2). G0G02/54).!.$G0G0-/“),%G0G03%26)#%84%.3)/.G0G0/2) to make the opening or extension of the relation dependent on the passing of satisfactory test calls.Reference1 Final Acts of The World Administrative Telegraph and Telephone Conference (Geneva, 1973) TelegraphRegulations Telephone Regulations, ITU, Geneva, 1973.