
4.1 Public Network Features
4.1.1 SIP (Session Initiation Protocol) Trunk
Description
Through a V-SIPGW card, the PBX can connect to an Internet telephony service provided by an ITSP (Internet
Telephony Service Provider).
An ITSP provides its telephony service partly through the conventional telephone network (e.g., ISDN and
Mobile), which is fee-based. An ISP (Internet Service Provider), which can also act as a SIP provider, does
not provide the telephone connection itself. However, providing its users with Internet access, an ISP provides
voice communication on the Internet for free. In this way, with VoIP technology based on the SIP protocol, the
cost of voice communication can be much cheaper than conventional telephone networks.
PC
LAN
(Local Area Network)
WAN (Wide Area Network)
Internet
Local
Telephone
IP-PT
ISP
ITSP
Router
Switching
Hub
V-SIPGW
PBX
Conditions
•
A subscription with an ISP is required for an Internet connection.
•
A subscription with an ITSP is required for a telephone connection. The ISP and ITSP may be part of the
same company.
376
Feature Guide
4.1.1 SIP (Session Initiation Protocol) Trunk
Summary of Contents for KX-NS300
Page 14: ...14 Feature Guide Table of Contents ...
Page 15: ...Section 1 For Your Safety Feature Guide 15 ...
Page 18: ...18 Feature Guide 1 1 1 For Your Safety ...
Page 19: ...Section 2 Call Handling Features Feature Guide 19 ...
Page 107: ...User Manual References 1 2 1 Basic Calling Feature Guide 107 2 5 4 Trunk Call Features ...
Page 193: ...User Manual References 1 4 2 Holding a Call Feature Guide 193 2 13 1 Call Hold ...
Page 324: ...324 Feature Guide 2 30 2 Outgoing Message OGM ...
Page 325: ...Section 3 Unified Messaging System Feature Guide 325 ...
Page 375: ...Section 4 Network Features Feature Guide 375 ...
Page 464: ...464 Feature Guide 4 3 6 Network ICD Group ...
Page 465: ...Section 5 System Configuration and Administration Features Feature Guide 465 ...
Page 560: ...560 Feature Guide 5 6 7 PING Confirmation ...
Page 561: ...Section 6 Appendix Feature Guide 561 ...
Page 578: ...578 Feature Guide 6 5 2 PFMPR Software File Version 004 2xxxx ...
Page 579: ...Feature Guide 579 Notes ...