calculation of voice codec
convenientstore
Member Posts: 53 ■■□□□□□□□□
can someone tell me how this works out to 8 kbps? This is from Cvoice book from ciscopress.. Just don't understand how they arrive at 8 kbps
The G.729 codec using two 10-ms samples consumes 20 bytes per frame, which works out to 8 kbps.
The G.729 codec using two 10-ms samples consumes 20 bytes per frame, which works out to 8 kbps.
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mikej412
Member Posts: 10,086 ■■■■■■■■■■
Check Voice Over IP - Per Call Bandwidth Consumption
I think you're looking for this formula:
codec bit rate = codec sample size / codec sample interval
remember your 8 bits per byte and puzzle out the "common units conversion" of ms to seconds
Are you using the new CVOICE Exam Certification Guide?
I remember a good explaination somewhere in the "old books" -- not sure about those new-fangled updated books that hint at the exams in the titles
:mike: Cisco Certifications -- Collect the Entire Set! -
convenientstore
Member Posts: 53 ■■□□□□□□□□
this is exactly what I was looking for.
Just bit suprised that these book do not have them.