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VoIP Bandwidth Calculator

For more background on the calculations used in this on-line tool, see the White Paper: 'VoIP Bandwidth Calculation'.

Inputs
1) Select Codec Type¹		2) Select sample period
or input bandwidth²
3) Silence suppression³

Results
Packets per second	Payload size	octets
IP/UDP/RTP bandwidth⁴	kbps
Ethernet bandwidth⁵	kbps	Max simultaneous calls on a GigE⁶

Notes:

Selecting Codec type will automatically select a recommended sample size
Enter a bandwidth manually if the codec is not listed
Reduces the bandwidth to 50% of what it would be without silence suppression. Note:- savings will vary depending on implementation and type of use.
IP/UDP/RTP headers added to payload assumes a fixed 40 octet overhead
Adds a further 38 octets for the Ethernet preamble (8), header (14), CRC (4) and Inter-frame gap (12)
Assumes 100% link utilization on FDX point-to-point link
If your company is looking to start its own VoIP termination business, you should check out the multimedia session controllers offered by Newport Networks.

VoIP Bandwidth Calculator

Inputs

Results