Installation guide

IP phones 28-8
Chapter 28: Understanding Wave IP Telephony
Wave Global Administrator Guide
Default inbound routing
To specify how to route incoming IP calls from unknown sources (that is, a call from an IP
address that is not included in your Signaling Control Point configurations), configure the call
handling rules with the default inbound call routing settings. Refer to “Configuring default
inbound IP call routing” on page 6-20 for more information.
Direct site-to-site IP calls
Direct site-to-site calling requires that every Wave Server using IP telephony specifies a
Signaling Control Point for every other IP telephony-enabled Wave Server on the network as
shown in the following diagram. In this example, Wave Server A has a Signaling Control Point
configured for Wave Server B, and vice versa.
IP phones
IP phones are a convenient way to set up communications between a remote worker, such as a
telecommuter, and the main office where a Wave Server is running. IP phones are also a cost
effective alternative to setting up a PBX for a small satellite office with fewer than five users.
IP phones in each of these scenarios can be set up at the remote site, and the IP call routing is
controlled by the Wave Server at the main office.
Note: A remote IP phone will not work with a traditional firewall or Network Address
Translation (NAT) router—you need to use a VPN connection or a SIP-aware firewall or
gateway.
IP
101
201
202
102
Wave ISM A
Wave ISM B:
204.168.x.y
SIP
Signaling Control
Points
Call routing
Wave ISM B
Wave ISM A:
205.153.p.q
SIP
Signaling Control
Points
Call routing
Release 2.0
September 2010