This is the original and official VoIP Calculator. Early unfixed copies of this calculator were copied from the original website, but most of them are still bugged.

Bandwidth Calculator for VOIP
SIMULTANEOUS CALLS
CODEC

FRAMES PER PACKET
L2 TECHNOLOGY
PROTOCOL
VPN
%
Compressed RTP

PAYLOAD:BYTES
SAMPLING:MS
MOS:
MIPS:
DURATION: MS
L2 HEADER: BYTES
ATM CELLS:
L3 HEADER: BYTES
VPN HEADER:
TOTAL LOAD: BYTES
BAND ONE CALL: Kbps
BAND ALL CALLS:Kbps
BAND OVERHEAD:Kbps

1-Some codecs presented here are not supported on Asterisk™ PBX.
2-Payload size can be increased at the endpoint.
3-To enable iLBC 15.2 is necessary to edit the Asterisk™ source code.
4-Asterisk GSM™ is also known by GSM-FR.
5-The results obtained from the calculator should be considered only in one direction. In half-duplex networks, like 802.11b(Wifi), you should double the estimates.
6-Network design and other protocols running in the same network should be considered too.

DISCLAIMER:

Information obtained from using this Bandwidth Calculator is believed to be accurate. Nonetheless, the author makes no guarantee that the results will provide any particular level of accuracy. Results obtained from using this calculator should not be relied upon as a sole source of information.

TRADEMARKS:

Asterisk™ is a trademark of Digium Inc, Cisco is a trademark of Cisco Systems Inc. Packetcable™ is a trademark of Cable Television Laboratories, Inc.

Copyright© 2006, Flavio E. Goncalves. All rights reserved