Remote access networks :
Dhawan, Chander.
Remote access networks : PSTN, ISDN, ADSL, Internet and wireless / Chander Dhawan. - New York : McGraw-Hill, c1998. - xxviii, 510 p. : ill. ; 24 cm. - McGraw-Hill series on computer communications .
Remote access networks : PSTN, ISDN, ADSL, Internet and wireless / Chander Dhawan. - New York : McGraw-Hill, c1998. - xxviii, 510 p. : ill. ; 24 cm. - McGraw-Hill series on computer communications .