Chapter 9 The VoIP General Screens

9.2 Media

Click VoIP > General > Media to set up and maintain global VoIP settings.

Figure 84 Media

The following table describes the labels in this screen.

Table 66 Media

LABEL

DESCRIPTION

Port Range

 

 

 

Media Port Start

Enter the listening port number(s) for RTP traffic on the WiMAX Device, if your

Media Port End

VoIP service provider gave you this information. Otherwise, keep the default

values.

 

 

To enter one port number, enter the port number in the both Media Port Start

 

and Media Port End fields.

 

To enter a range of ports, enter the beginning port number of the range in the

 

Media Port Start field and the ending port number in the Media Port End field.

 

 

Codec Packetization Time Settings

 

 

G.711, G.729

Select how often (10 to 60 msecs) the WiMAX Device sends an RTP packet for

 

each type of voice coder/decoder (codec) G.711 and G.729.

 

 

Advanced

 

 

 

Voice Jitter Buffer

Voice jitter is a variation in delay of RTP packets delivery. This could cause

Type

strange sound effects. The WiMAX Device can utilize the following types of jitter

 

buffer to minimize the effects of jitter.

 

Dynamic - Jitter buffer size is dynamically changed by RTP packets delivery

 

status.

 

Static - Jitter buffer size is fixed.

 

 

Voice Jitter Buffer

Select the maximum number of milliseconds of voice traffic the WiMAX Device

Length

can help to smooth out the jitter in order to ensure good voice quality for your

 

conversations.

 

 

 

153

WiMAX Device Configuration User’s Guide