How much data bandwidth does the V-Iris / IPT use in AES67 mode?


V-Iris AES67 data bandwidth.

1 x V-Iris panel bandwidth usage: ~4.6 Mbps, then ~1.15 Mbps for each additional channel (up to a total of 3 channels, so ~6.9. Mbps).

 Once the connection is established, we are sending uncompressed 24bits 48kHz audio over RTP for each audio channel. So the audio itself is 1.152 Mbps.

Each RTP packet we send has 12 (RTP) + 8 (UDP) + 20 (IP) + 24 (Ethernet)

  • Ethernet Header: 14 bytes

  • IP header: 20 bytes

  • UDP Header: 8 Bytes

  • RTP Header: 12 bytes

= 54 bytes = 432 bits of overhead.

In AES67 if you send 1ms packets, that’s 1000 packets per second = 432 kbps of overhead on top of the 1.152 Mbps of audio = roughly 1.6 Mbps

If you send 125 usec packets, that’s 8000 packets per second = 3.456 Mbps of overhead on top of the 1.152 Mbps of audio = roughly 4.6 Mbps. (Default mode)

AES67 allows for multiplexing multiple channels in the same packet. That’s why additional channels don’t add as much overhead

 

AES67 / ST2110 trunklines use 24bit depth.

  • 1 channel per trunkline

Bandwidth

 

 

48000

 

48000

 

 

Channels

 

125us

 

1ms

 

 

 

Bit depth

B. Width

Pkt Size

B. Width

Pkt Size

AES Direct

1

24

4.608

72

1.584

198

 

2

24

5.760

90

2.736

342

 

3

24

6.912

108

3.888

486

 

4

24

8.064

126

5.040

630

 

 

 

 

 

 

 

IRIS

1

24

4.608

72

1.584

198

 

2

24

5.760

90

2.736

342

 

3

24

6.912

108

3.888

486

 

 

 

 

 

 

 

IPT

2

32

6.528

102

3.504

438

EDGE

4

32

9.600

150

6.576

822

 

 

CAN'T FIND YOUR ANSWER? CLICK HERE TO CONTACT SUPPORT


This solution was provided to you by Clear-Com via a question submitted to us by customers like you. If your question wasn’t answered, you need help or you have a recommended solution for our database, please send us an email at support@clearcom.com

The information on this page is owned by Clear-Com and constitutes Clear-Com’s confidential and proprietary information, may be used solely for purposes related to the furtherance of Clear-Com’ business and shall not be disclosed, distributed, copied or disseminated without Clear-Com’s prior written consent. Click Here for Clear-Com's privacy statement.