Bandwidth Requirement for Video Call

[shambhuchaursiya]

Hi,

I am having Cisco 9951 phones in my all location now we want to configure Video call between two location (Head office to SRST locaiton). Please help me how much bandwidth is require to make video calls.

Also, what all configuration is require for the same.

Regards,

Shambhu

[Zekeria Sammantar]

The default is inter-region max video call bit rate is 384K, close to one video call.

The default Interregion max video call bit rate is 384K.

The bandwidth would depend on the resolution being used. The recommended bandwidth for resolutions are as follow:

VGA 360p@30fps: 768 - 2000kbps

VGA 360p@15fps: 448 - 767kps

CIF@30fps: 320 - 447kbps

CIF@15fps: 256 - 319kbps

QCIF@30fps: 128kbps – 255kbps

QCIF@15fps: 64 - 127kbps

And 9971 IP Phone supports below formats:

SQCIF (128 x 96 pixels)

QCIF (176 x 144 pixels)

QVGA (320 x 240 pixels)

SIF (352 x 240 pixels)

CIF (352 x 288 pixels)

VGA (640 x 480 pixels)

[shambhuchaursiya]

Thanks for your prompt response.

I am very much new in video, please tell me which is standard resolutions is generally used by most of the customer.

Also, 384K is one way bandwidth without any header right?

Please help me to calculate bandwidth including 2 way audio communication + header + resoulation

Thanks.

[Zekeria Sammantar]

I believe the 384 Kbps is for audio + video

64 Kbps for g711 Audio + 320 Kbps of Video (CIF (352x288) at 30 fps)

this does not include IP Header.

[alhanafe11]

90

The Point-to-point IP video conference session consists of two independent bidirectional streams (Audio +Video) Streams,

totally the B.W for one video conference call around 860 kbit/s.

Regards