Talkswitch 48-CVA - Manual (Page 3)

Table of Contents
1.0 Introduction to VoIP
How does VoIP work? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .i
Does a VoIP call sound like a regular phone call? . . . . . . . . . . . . . . . . . . . . . . . .i
If the power goes out, does the VoIP network stay up? . . . . . . . . . . . . . . . . . . . . .ii
What happens to VoIP if the IP network fails . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ii
I have a firewall and heard that it can prevent VoIP calls . . . . . . . . . . . . . . . . . . . .ii
What is SIP? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iii
What is a VPN? Can a VPN help me carry data securly over the Internet? . . . . . . .iii
What’s the difference between a Public and a Private IP address? . . . . . . . . . . . . .iii
What is NAT and how does it affect VoIP? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iv
What’s the difference between a Static and a Dynamic IP address? . . . . . . . . . . . .iv
What is a SIP proxy and registrar? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iv
What is dynamic DNS? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .v
What is the drawback of dynamic DNS? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .v
How often will my Public IP address change? . . . . . . . . . . . . . . . . . . . . . . . . . . . .v
What is a port number? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .vi
2.0 Installing TalkSwitch
2.1 What’s included with TalkSwitch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
2.2 Front Panel Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2.3 Back Panel Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
The TalkSwitch 48-CVA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2.4 Plugging into the Back Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2.4.1 Attaching telephone lines to TalkSwitch line jacks . . . . . . . . . . . .5
2.4.2 Attaching phones and other analog devices
to TalkSwitch extension jacks . . . . . . . . . . . . . . . . . . . . . . .5
2.4.3 Connecting Devices to the Music and PA Jacks . . . . . . . . . . . . .6
2.4.4 Connecting TalkSwitch to a PC . . . . . . . . . . . . . . . . . . . . . . . . .6
2.4.4.1 Serial connection . . . . . . . . . . . . . . . . . . . . . . . . .7
2.4.4.2 USB connection . . . . . . . . . . . . . . . . . . . . . . . . . .7
2.4.4.3 LAN connection . . . . . . . . . . . . . . . . . . . . . . . . . .8
2.5 Using 2 or more TalkSwitch units on a LAN . . . . . . . . . . . . . . . . . . . . . . . . . .8
2.5.1 Connecting 2 or more TalkSwitch units to a LAN . . . . . . . . . . . . .8
2.5.2 Setting the Unit ID for the first time . . . . . . . . . . . . . . . . . . . . . . .9
2.5.3 Changing the Unit ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
2.5.4 Unit IDs and how they affect the system extension numbers . . . .10
2.5.5 Keeping track of the lines and extensions . . . . . . . . . . . . . . . . .10
2.5.6 Optimizing the system for networked use . . . . . . . . . . . . . . . . .11
2.6 Optimizing your IP network for VoIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
2.6.1 The Broadband Connection . . . . . . . . . . . . . . . . . . . . . . . . . . .12
2.6.2 The Router/NAT/Firewall . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
2.6.3 The Local Area Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
TS manual 11th ED_CVA_v11_CD_Release.qxd 7/13/2004 3:33 PM Page iii