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1.1 Information about IP Telephony Service
1.1 Information about IP Telephony Service
The KX-TDA5450 SIP-GW4 card is a CO line card which is designed to be easily integrated into Internet
Telephony Service provided by an ITSP (Internet Telephony Service Provider). With VoIP technology based
on the SIP protocol, the cost of voice communication can be much cheaper than conventional telephone
networks.
Mounting the 4-channel VoIP DSP (SIP-DSP4) card on a SIP-GW4 card can enhance the channel capacity to
a total of 8 channels.
SIP-GW4 Connection Outline
The following diagrams illustrate a simple VoIP networks connecting the SIP-GW4 card to the Internet or LAN.
[Diagram 1]
WAN (Wide Area Network)
LAN
(Local Area Network)
PC
6
Installation Manual
Internet
ITSP
ISP
Router
Switching
Hub
IP-PT
(Exclusively for maintenance
of the SIP-GW4 Card)
Local
Telephone
PC
Document Version 2008-10
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