.. ISDN Frame Relay: ( .. ( . .. ))
: .. ( . .. ) :
:
ISDN Frame Relay, , , . ISDN, , , LAN WAN Frame Relay.
, . , ISDN Frame Relay.
, , , . .
, :
1-:
2-:
.1. E1, PDH, SDH
.2. , B-ISDN, ATM
3-: ISDN Frame Relay. ( )
4-: ()
5-: ADSL ADSL2+.
ISBN: 5-88405-013-5
: -
: 1999
: 188
:
: