Installation guide

IP call scenarios supported on the Wave system 28-3
Chapter 28: Understanding Wave IP Telephony
Wave Global Administrator Guide
IP call scenarios supported on the Wave system
An IP call is a phone call in which at least one portion of the voice signals are transported across
a data network. Wave ISM supports the following IP call scenarios:
• Site-to-site IP calls
• IP phone calls
Site-to-site IP calls
A site-to-site IP call is a phone call in which the segment of the call path between two Wave
Servers is on the data network, as shown in the following diagram:
For more information about the DSPs, licenses, and configuration required for this scenario, see
the following sections of this document:
• “DSP resources required in a site-to-site scenario” on page 28-5
• “Direct site-to-site IP calls” on page 28-8
IP phone calls
An IP phone is connected directly to the data network; therefore, a call involving an IP phone
uses the portion of the data network between the IP phone and the Wave system. IP phones can
make calls to devices on the PSTN, to internal analog and digital phones connected to the Wave
Server, and to other IP phones.
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Wave ISM A
packets packets
voice
signal
Wave ISM B
IP
DSPDSP
voice
signal
Release 2.0
September 2010