Handset Error Messages - Avaya Communication Server 1000 Installation And Commissioning Manual

Voice-quality issues
The transport, or IP data network, are the most likely causes of voice-quality issues. In some
circumstances, product issues (such as echo or Digital Signal Processor (DSP) errors) can
cause problems with voice quality. The data network does not introduce echo into a
conversation, but it can enhance existing echo.
In a converged environment, voice competes with data traffic for bandwidth and processor
time. As a result, the IP data network must be optimized for efficient processing of the real-
time voice packets.
Table 53: Typical voice quality issues
Issue
Choppy voice
First or last part of
word syllables
missing
Clicks or pops heard
during conversation
One-way speech
path
Voice delay (users
talk over each other)
Echo

Handset error messages

Table 54: Handset error messages
liquid crystal diode (LCD) display of the wireless handsets.
Avaya WLAN IP Telephony Installation and Commissioning
Type of issue
Network Network delay caused by: Excessive intermittent
(usually) end-to-end round-trip delay Congestion Queuing
Network configuration errors
Packet loss caused by: Physical errors in data
network Network configuration errors
Product Incorrect Voice Activity Detection (VAD)
(usually) configuration OR Incorrect AP configuration (if the
issue occurs only during roaming)
Packet loss, cause depends on the codec
Network IP routing issues Congestion issues
Product Incorrect configuration
Network Excessive network delay
Network Data network can enhance echo
Product
(primarily)
on page 234 shows error messages that appear on the
Handset error messages
Check for
November 2010 233