Talley, David.
Basic telephone switching systems / David Talley. - 2nd ed. - Rochelle Park, N.J. : Hayden Book Co., c1979. - 184 p. : ill. ; 25 cm.
Includes index.
0810456877 : $7.95
79050792
Telephone systems.
Telephone, Automatic.
TK6397 / .T34 1979
621.385 / T148b
Basic telephone switching systems / David Talley. - 2nd ed. - Rochelle Park, N.J. : Hayden Book Co., c1979. - 184 p. : ill. ; 25 cm.
Includes index.
0810456877 : $7.95
79050792
Telephone systems.
Telephone, Automatic.
TK6397 / .T34 1979
621.385 / T148b