I have a CIS gateway (unicast client) and a CIS headset (unicast server). The BLE 5.4 spec seems to say each stream is bi-directional. So for my stereo headset and gateway, that is one CIG with two CIS? If I want them to be always-on, does that mean it needs to be one CIG with four CIS (as shown in the tested topologies)?
What if I want to add NUS? (See Integrate NUS into BLE Audio code post.) Does that consume one directional CIS? Or two CIS?
Which of these are possible with NRF5340 SDK 2.5.1?
- Stereo headset and stereo gateway consume two bidirectional CIS. NUS uses one bidirectional CIS. There is CIS one open for the future.
- Stereo headset and mono gateway consume three CIS. NUS consumes the last one.
- NUS consumes two CIS leaving only space for mono headset and mono gateway.
Does it matter what is running on the network core? (I'm planning to use LC3 but haven't gotten the paperwork done.)
Thank you!
ecw
