[SIPForum-discussion] calculate number of calls

[Chris Anderson]

hello all.  i hope this is the right place to post my first question.  i'm
having a problem calculating the number of calls that can be made at one
time.   any help would be helpful.

here are the attributes.
codec -g.711
wan bandwidth - 768Kbps
packet header - 6 bytes
payload - 160 bytes
crtp- no.
here is the formula i've been using.

packet header + crtp + payload = x
x / payload * bitrate = y
wan bandwidth / y = # of calls.
or
6 +(no crtp = 0) 0 + 160 = 166
166 / 160 * 64 (g.711) = 66.4
768 / 66.4 = 11.5
# of calls 11.5

i know thats the wrong answer, but i don't know where i'm going wrong.

any help would be great.   thanks in advance.

-- 
Thanks,

Chris Anderson
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