Hi Bharat,

Thank you for the feedback. Yes, overall RTCP bandwidth is 5% of AS value.

But this RTCP bandwidth is in addition to AS value or part of AS value.

If AS 41, bandwidth available for RTP 41 and 2.05 for RTCP or

Bandwidth available for RTP is 38.95 and RTCP 2.05?


Regards,
Venkat Ramana

On 05-Sep-2017 9:26 PM, "Ranganatha, Bharath (Nokia - IN/Bangalore)" <
bharath.rangana...@nokia.com> wrote:

Hi Arun,

You need to look in the SDP body for the bandwidth allocated in to the
respective video codec..
Based on that you can calculate the RR and RS with below logic.

If UE indicates AS parameter 41 mbps, then
RS Parameter = 1.25% of AS parameter = 512 kbps
RR Parameter = 3.75% of AS Parameter = 1537 kbps

Same logic applies in your case too...


Reg,
-Bharath

-----Original Message-----
From: sip-implementors-boun...@lists.cs.columbia.edu [mailto:
sip-implementors-boun...@lists.cs.columbia.edu] On Behalf Of Arun Tagare
Sent: Saturday, September 02, 2017 11:27 AM
To: sip-implementors@lists.cs.columbia.edu
Subject: [Sip-implementors] Dividing the AS, RR and RS values from NW
allocated DL_MBR

Hi All,

Need one clarification on dividing/allocating the AS, RR and RS bit rates,
from the received value in the bearer modification [incoming OTA message
from the NW]

Scenario:
If DUT A and DUT B are in VT call.

After some operation DUT A receives bearer modification from the NW with DL
MBR say (400) [In the incoming OTA message] How this DL MBR should be
divided among the AS, RR and RS

Example 1:
AS: 400
RS: 5000
RR: 6000

Example 2:
AS: 389  [400 - (5000+6000)]
RS: 5000
RR: 6000

I am not clear with this calculation please help to share the inputs

*RFC 3550:*

Appendix B - Changes from RFC 1889

-  The description of the session bandwidth parameter is expanded in
Section 6.2, including a clarification that the control traffic bandwidth
is in addition to the session bandwidth for the data traffic.


--

With Regards

Arun A. Tagare
+91 9449 029729
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