Summers, Charles K..
ISDN Implementor's Guide : Standards, Protocols and Services. / Summers Charles K.. - New York : McGraw-Hill, 1995. - XVIII, 413 s.: il.; 24 cm.
0070694168
ISDN Implementor's Guide : Standards, Protocols and Services. / Summers Charles K.. - New York : McGraw-Hill, 1995. - XVIII, 413 s.: il.; 24 cm.
0070694168