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How Many Simultaneous Calls Can I Get Down My Link?

The following chart illustrates the theoretical maximum number of simultaneous voice calls that can be delivered over a WAN for a given link speed. This does not take into account any bandwidth that may be required for data traffic between sites or the physical limit of VoIP calls for the specific version of IP Office in use.

The number of simultaneous voice calls can be in excess of the capabilities of the individual platform, where the calls transit the switch as data traffic. In this situation compression resources are not used but obviously must be catered for in the overall bandwidth provision.

 

Compression

G.723.1 (6.3K)

G.729a (8K)

G.711 (64K)

Algorithmic Delay (seconds)

0.08

0.04

0.02

Number of Calls

 

 

 

- 64Kbps Link

6

4

0

- 128Kbps Link

12

9

1

- 256Kbps Link

25

19

3

- 512Kbps Link

51

38

7

- 1Mbps Link

103

77

14

- 2Mbps Link

207

155

29

 

 

© 2010 AVAYA
15-601041 Issue 20.f.-
18:14, 25 February 2010
(simultaneouscalls.htm)

Performance figures, data and operation quoted in this document are typical and must be specifically confirmed in writing by Avaya before they become applicable to any particular order or contract. The company reserves the right to make alterations or amendments at its own discretion. The publication of information in this document does not imply freedom from patent or any other protective rights of Avaya or others.

All trademarks identified by (R) or TM are registered trademarks or trademarks respectively of Avaya Inc. All other trademarks are the property of their respective owners.

Last Modified: 06/06/2009