User Guide

37
R27A/V
Admin Guide
DialPad Input Number Limit: To limit the input numbers to prevent
unnecessary security problems.
4.2. Intercom
4.2.1. Call Time Related
Go to Intercom - Basic to configure.
Max Call Time: To configure the max call time.
Dial In Time: To configure the max incoming dial time, available
when auto answer is disabled.
Dial Out Time: To configure the max no answer call time.
4.2.2. AEC Level
Go to Intercom - Basic to configure.
AEC Level: AEC is used to adjust the echo effect during the
communication. The default value is 700. Increase the level, the
echo control is better.
Figure 4.1.4-2 Dialpad input number limitation
Figure 4.2.1 Call time related
Figure 4.2.2 AEC level