Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
New Member

TX 9000 telepresence bandwidth requirement

  Hi guys,

what is the bandwidth requirement for TX9000, on datasheet its mentioned on cisco website its 10MB i need to have some practical example

weather this real bec some cisco patner are saying 14MB for  three screens.

2 REPLIES
VIP Super Bronze

TX 9000 telepresence bandwidth requirement

The TX9000 is using a newer CTS firmware 1.9 which does achieve up to 20% savings in bandwidth so 10Mbps is feasible. The challenge with your question is that video is inherently bursty based on a ton of variables, motion being a big one. Cisco is giving an average/typical figure at 10Mbps and your Cisco partner is playing it safe at 14Mbps. You have to decide which case you want to engineer your network for: typical or worst. For the cost of this equipment worst case seems like the logical choice. Also don't forget about things such as content sharing which also consume bandwidth.

Cisco Employee

TX 9000 telepresence bandwidth requirement

This answer really depends on the Main Video resolution and Frame rate you are setting the TX9xxx to for the CUCM Device profile "Product Specific Configuration Layout" for the : Quality (per Display) as well as Main Display Frames Per Second and Bandwidth Allocation Weights all play into this factor.

Please refer to the following link for more information on this issue:

http://www.cisco.com/en/US/docs/telepresence/tx_sw/6_0/admin/guide/tx_sw_admin.pdf

Understanding How Endpoints Determine fps and Video Quality

During Cisco TelePresence call setup, the sending and receiving endpoints determine the fps (30 or 60

fps) and video quality (1080p or 720p) in which the video streams are sent and received.

The determination is made as a result of the following factors:

The amount of Transport Independent Application

Specific (TIAS) bandwidth that is negotiated

between the sending and receiving endpoints.

The minimum amount of bandwidth is determined

by the settings of Main Display Frames Per

Second and Quality (Per Disp

lay) in the Phone Configuration page of Unified CM.

Table 4-3

displays the bandwidth requirements based on the Unified CM configuration.

The maximum frame size that the network and system can accommodate.

The negotiation of the video resolution and frame

rate (in fps) by the sending and receiving

endpoints.

The maximum bit rate allowed in the Region settings

for your device in Unified CM. These settings

are applied to the Device Pool, which

in turn are applied to your device.

To find your region settings, log in to the Cisc

o Unified CM Administration GUI and navigate to

System > Region

. The maximum rate is the value shown in the Max Video Call Bit Rate (Includes

Audio) field.

Table 4-2

shows the three criteria that

are required in the first three columns of the table, and the

resulting video stream that can be sent

in the fourth column of the table.

If any of the factors do not meet the minimum requirements, the system attempts to send and receive

video at the next lowest rate as shown in

Table 4-4

.

For example, if the system and network cannot meet

the minimum requirements to send a video stream

with the maximum video quality of 1080p 60, the sy

stem attempts to negotiate a video stream of

720p 60. If the system cannot meet the requirements to send a video stream of 720p 60, it attempts to

negotiate a video stream of 720p 30as shown in

Ta bl e 4 -4

.

Under the following circumstances, the 60 fps-capable Cisco TelePresence endpoints and device send

the main video stream at 30 fps:

When in a call with an endpoint or device that supports a maximum frame rate of 30 fps.

When in a call with a Cisco TelePresence endpoint that is registered with a Cisco Unified

Communications Manager (Unified CM) version that does not support 60 fps as a setting for Main

Display Frames Per Second in the Phone Configuration page.

When in a call with a Cisco TelePresence endpoint that is registered with a Unified CM version that

supports 60 fps but “30 fps main” is the setting for Main Display Frames Per Second in the Phone

Configuration page

1668
Views
0
Helpful
2
Replies
CreatePlease to create content