Huawei AR1200 Series Configuration Manual - Voice page 41

Huawei AR1200 Series Enterprise Routers
Configuration Guide - Voice
Establishing the Configuration Task
Before setting DSP parameters, familiarize yourself with the applicable environment, complete
the pre-configuration tasks, and obtain the data required for the configuration. This will help
you complete the configuration task quickly and accurately.
Applicable Environment
The digital signal processing (DSP) collects, converts, filters, measures, enhances, compresses,
or identifies signals and coverts the signal from an analog to a digital form.
The DSP module converts analog voice signals into digital signals and stores a certain number
of digital signals into packets for transmission. To improve the voice communication quality,
the DSP needs to further process voice signals.
Pre-configuration Tasks
Before setting DSP parameters, complete the following task:
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Data Preparation
To set DSP parameters, you need the following data.
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Issue 03 (2011-09-30)
Configuring IP addresses and routing protocols for interfaces to ensure connectivity
Data
VBD switching mode
Default DSP channel code type and default interval at which the DSP channel
packetizes RTP packets
T.30 redundancy parameter value of the T.38 fax, T.4 redundancy parameter value
of the T.38 fax, fax training mode, and maximum fax training rate
Alarm threshold of the dynamic jitter buffer, initial value of the dynamic jitter buffer,
maximum value of the dynamic jitter buffer, maximum value of the static jitter buffer,
minimum value of the dynamic jitter buffer, minimum value of the static jitter buffer,
and initial value of the static jitter buffer of a DSP channel
RTP payload type value, G.726-16k payload type value, G.726-24k payload type
value, G.726-32k payload type value, G.726-40k payload type value, NTE payload
type value, redundancy payload type value, and VBD payload value of a DSP channel
Interval at which a DSP channel sends RTCP packets and threshold for the number
of severe degrade seconds
Resource threshold in hierarchical control mode
Data event transmission mode, special process, DTMF transmission mode, echo
cancellation function, input gain, output gain, jitter buffer mode, NLP mode, and DSP
working mode in a DSP template
DSP loopback type and DSP channel parameters
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1 SIPAG Configuration
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