1812-(01-06): Frame Size [System: VoIP: Profile (1-4): Codecs (1812): Frame Size]

For the selected CODEC, use this option to specify the frame (voice packet) size. For example, a setting of 40mS means the CODEC will generate a packet containing digitized voice and other control information every 40mS. There are several advantages to selecting the shortest possible packet size:
  • The possibility of a party on the call hearing an audible delay is minimized.
  • If a single packet is lost, the effect of the lost speech will be less obvious.

However, since each packet (regardless of size) has a similar amount of overhead data, shorter packets require more bandwidth. Longer packets contain more voice data per packet and require less bandwidth, but are more susceptible to delay and audible artifacts from dropped packets.

Here are links to several free on-line VoIP tools:

Features Related to this Program

Telephone Features
IntraMail Features

Program Options

CODEC Option Frame Size
G.711 01 10mS
  02 [Default] 20mS
  03 30mS
  04 40mS
G.726 01 10mS
  02 [Default] 20mS
  03 30mS
  04 40mS
G.729 01 10mS
  02 [Default] 20mS
  03 30mS
  04 40mS
  05 50mS
  06 60mS
G.723 03 [Default] 30mS
  06 60mS
G.726 01 10mS
  02 20mS
  03 [Default] 30mS
  04 40mS
ILBC 02 20mS
  03 [Default] 30mS
  04 40mS