Talkswitch CT.TS005.002606 - Manual (Page 14)

E V E R Y C A L L C O U N T S 1 3
TALKSWITCH VOIP NETWORK
A TalkSwitch VoIP network has at least one SIP device at each location. A SIP
device is a VoIP-enabled TalkSwitch unit, IP telephone or SIP gateway. One
TalkSwitch unit in the network acts as the SIP server. The other SIP devices are
SIP clients.
A user, auto attendant or call cascade can dial a three-digit VoIP number (ranging
from 250 to 299) to reach an extension, auto attendant or voice mailbox at
any location.
For example, the following illustration shows a TalkSwitch VoIP network with two
locations. Calls between the offices are routed over the Internet, and local calls
are routed over the traditional telephone network.
Figure 3: TalkSwitch VoIP network
Five VoIP numbers are assigned to San Francisco (251 to 255), and nine are
assigned to New York (261 to 269). These VoIP numbers can be dialed directly
from any extension, auto attendant or call cascade in the network.
The TalkSwitch unit in the San Francisco office has a static public IP address, so is
designated as the SIP server. The TalkSwitch unit in New York is a SIP client.
Before proceeding, ensure you have:
• Connected the TalkSwitch system at each location to a network (see page 3).
• Configured local and public IP addresses (page 4).
• Configured the router (page 7).