Summers, Charles K.
Isdn implementor's guide : standards, protocols, & services / [by] Charles K. Summers - New York McGraw-hill 1995 - x, 413 p.
Includes references, index
70694168
621.382 / SUM
Isdn implementor's guide : standards, protocols, & services / [by] Charles K. Summers - New York McGraw-hill 1995 - x, 413 p.
Includes references, index
70694168
621.382 / SUM