
Chapter 2 Prerequisites checklist 35
IP Telephony Configuration Guide
Configuring media gateway parameters for IP service
To set up the media gateway resources that you require for optimum IP telephony, set the fields on
the System Configuration window.
1 Click the Services and IP Telephony keys.
2 Click System Configuration.
The Parameters screen appears in the right frame.
Figure 4 System Configuration, Parameters screen
3 Change the settings for the fields below, as required for your system.
Table 8 IP terminals general record fields
Field Value Description
Echo Cancellation Enabled w/NLP
Enabled
Disabled
Enable or disable echo cancellation for your system.
Default: Enabled w/NLP (check with your internet system
administrator before changing this)
Echo Cancellation selects what type of echo cancellation is used on
calls that go through a Media Gateway. NLP refers to Non-Linear
Processing.
G.723.1 Data Rate 5.3 kbps
6.3 kbps
Choose the preferred data rate for the channel.
G.723.1 Data Rate selects what data rate is used for transmissions
from the Business Communications Manager to an IP device when
the G.723.1-family codec is used (G.723.1 or G.723.1A). This has no
effect on any other codec. The possible values are 5.3 kbps and 6.3
kbps.
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