, , , ( ) VoIP . , . , - c FXS/FXO , "" IP.
FXS/FXO ( ) - . - .
, . (POTS Plain Old Telephone Service) - , (CO Central Office) . , . , , , .
FXS
( , ) , , RJ-11 ( ).
, , FXS Foreign eXchange Subscriber / Station, POTS. , , . S- (Subscriber - ) FXS , c .
, FXS :
- - , , , , . Dial Tone;
- - , ;
, FXS , , .
FXO
FXO Foreign eXchange Office - , POTS, , . RJ-11 (CO Central Office), O - Office FXO.
(on-hook/off-hook), , Dial Tone .
, FXO .
, .
- FXS ( ) , . (, )
- FXO , FXS, POTS.
, , FXO FXO , FXS FXS. , (FXO), .
FXS/FXO
(), . , FXS, FXO.
(FXS), FXO , Dial Tone , , FXO, FXS .
VoIP FXS/FXO
, , IP, VoIP . , FXO FXS . :
1
, . IP- Asterisk.
FXO . (FXS) FXO , Ethernet IP- Asterisk. FXO , IP- Asterisk. :
2
, . IP- Asterisk
, FXS . FXO, FXS , Ethernet IP- Asterisk. FXS , Asterisk. :
, . , FXS FXO :)