VoIP
SIP
VoIP , , IP.
. - , VoIP , - . , ( ) IP . VoIP .
VoIP , . , . VoIP , (E1/T1, ISDN) (FXO, FXS).
IP , SIP .

, , SIP - (trunk), , SIP. SIP , , - .
, AddPac. AddPac Cisco, , .
.
Gateway# configure terminal Gateway(config)#interface FastEthernet 0/0 Gateway(config-if)# ip address 192.168.0.11 255.255.255.0 Gateway(config-if)# exit Gateway(config)# ip route 0.0.0.0 0.0.0.0 192.168.0.1
- (dial-peer) . - , . , - , SIP .
- :
Gateway(config)# dial-peer voice 0 pots Gateway(config-dialpeer-pots-0)#destination-pattern [ID, SIP ] Gateway(config-dialpeer-pots-0)#port 0/0 Gateway(config-dialpeer-pots-0)#exit Gateway(config)# dial-peer voice 1 pots Gateway(config-dialpeer-pots-1)#destination-pattern [ID, SIP ] Gateway (config-dialpeer-pots-1)#port 1/0 Gateway(config-dialpeer-pots-1)#exit
- SIP :
Gateway(config)#dial-peer voice 100 VoIP Gateway(config-dialpeer-VoIP-100)#destination-pattern T
dial-peer
Gateway(config-dialpeer-VoIP-100)#session target sip-server
, SIP-.
Gateway(config-dialpeer-VoIP-100)#session protocol sip
, , SIP
Gateway(config-dialpeer-VoIP-100)#voice-class codec 0
Gateway(config-vclass-codec#0)# codec preference 1 g711alaw Gateway(config-vclass-codec#0)# codec preference 2 g729 Gateway(config-dialpeer-VoIP-100)# no vad
,
Gateway(config-dialpeer-VoIP-100)#exit
SIP UA (User Agent)
Gateway(config)# sip-ua Gateway(config-sip-ua)# sip-username [ID, SIP ] Gateway(config-sip-ua)# sip-password ******* [Password, SIP ] Gateway(config-sip-ua)# sip-server [ SIP-] Gateway(config-sip-ua)# srv enable
, ( ) . DNS Service Record
Gateway(config-sip-ua)#register e164
. .
Gateway(config-sip-ua)#exit Router#write
, SIP . 0/0 1/0, .
, . , , VLAN, .
VoIP . .