Jitter Buffer

Optionally, you can choose to employ a jitter buffer for the Vocera SIP Telephony Gateway or Vocera Client Gateway to prevent lost packets. However, a jitter buffer may increase the audio latency for calls.

When you open the vgwproperties.txt file, you can set the following jitter buffer properties:

Table 1. Jitter buffer properties

Property

Description

VGWUseRTPJitterBuffer

Enables a jitter buffer for RTP packets. By default, this is set to FALSE, meaning the jitter buffer is disabled.

VGWUseVRTPJitterBuffer

Enables a jitter buffer for RTP packets. By default, this is set to FALSE, meaning the jitter buffer is disabled.

RTPJitterMaxSize

Sets the maximum number of packets in the RTP jitter buffer. The default is 10.

RTPJitterUseFixed

Whether to used a fixed or adaptive jitter buffer. The default is TRUE (fixed).

RTPJitterPrefetch

The number of packets to pre-buffer. The default is 3.