VoIP and Video capacity planning

[josephschung]

For 1000 users, what is the bandwidth for backbone to run VoIP and video?

Thanks

[a-vazquez]

Total packet size = (L2 header: MP or FRF.12 or Ethernet) + (IP/UDP/RTP header) + (voice payload size).PPS = (codec bit rate) / (voice payload size).Refer URL

http://cisco.com/en/US/tech/tk652/tk698/technologies_tech_note09186a0080094ae2.shtml#formulae

[gpulos]

the above link is very good as it pertains to 'per call bandwidth consumption'

you may need to use a little more to find your answer such as a capacity planning procedure(s). since you have voice and video, this will be two part.

(minding that video if used for all users will require much more capacity than the voice; possibly upto 50 - 100 times more depending on your use/needs)

some decent capacity planning providers, case studies and best practices are as follows:

42U - obtain a free capacity planning consultation.

http://www.42u.com/proj-eval.htm

nice case study by cisco on capacity planning:

http://www.writtenright.net/Portfolio/WrittenRightCaseStudy.pdf

(for do it yourself)

a very good 'best practices handbook' by wainhouse:

http://www.wainhouse.com/files/papers/wr-best-net-vnvoip.pdf