Zte ZXHN H2640, Руководство по управлению техническим обслуживанием

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6 Configure the VoIP
SJ-20200714160642-002 | 2020-07-27(R1.0) 6-3
6.3 Configure the Advanced Parameters of VoIP
This procedure describes how to configure advanced parameters of the VoIP service,
including echo cancellation, jitter buffer, and DTMF.
Configuring the Advanced Parameters
1. On the main page of the ZXHN H2640, select VoIP > Advanced . The Advanced
Parameters page is displayed, see Figure 6-3 .
Figure 6-3 Advanced Parameters Page
2. Set the advanced parameters. For a description of the parameters, refer to Table
6-2 .
Table 6-2 Advanced Parameter Descriptions for the VoIP Service
Parameter Description
DTMF
DTMF mode. Options:

RFC2833 : DTMF digits are carried by RTP streams.

DTMF in Voice : DTMF digits are not processed.

SIP Info :SIP protocol information.
Jitter Buffer
The variation in packet delay is called jitter. Jitter buffer refers to
intentional delay of packets. Options:

Fixed : A fixed buffer time must be specified.

Adaptive : A jitter range must be specified.
Min Value Minimum value of the jitter range, default: 20 ms.
Max Value Maximum value of the jitter range, default: 200 ms.
3. Click Apply button to apply the changes.
Configuring the Echo Cancellation
Steps
Abstract