Ip Telephony

IP TELEPHONY
49011222066 CS ICT 48011210937

(PBX) (Circuit Switching)

(Data Network) (Packet -Switching)

(

)

Internet Voice over IP (VoIP)

Protocol IP (Internet Protocol)

( IP Telephony )
IP telephony

IP Telephony

Telephony
1.

IP
(Infrastructures)

Telephony(

)

IP
VoIP

2. IP Telephony Gateways Gateway

PSTN (Public Switched Telephone Network)

Telephony(
Client)

)

IP
(Software

3. IP Telephony Terminals

Telephony(
4. Gatekeeper

)

IP

VoIP Gateway VoIP

IP2006 Standard SIP IP Phon

IP2009 Amazing Video Phone

IP TELEPHONY
1. (PC TO Telephone)

PBX)

(Router to

IP TELEPHONY(
2. TO Telephone)

)
(Telephone

IP TELEPHONY(
3. (Telephone TO PC)

)

4. (PC TO PC)

IP Telephony
1. IP Telephony

implement IP Telephony 2.

IP Telephony
3. , high mobility IP forward Call

IP Telephony
4.

5. , (meet me conference) ,

,

website,

IP TELEPHONY
TELEPHONY IP

10 3

1

(PSTN)

(VoIP) (VoIP)

(
( VoIP 3 4 ) VoIP

)