Unicast

When you page a building, do you call every speaker individually,

or do you broadcast? Unicast versus multicast.

Unicast is point-to-point, much like a regular phone call.

The PBX sets up and maintains one individual SIP call per endpoint.

Viking's own tutorial is blunt about this.

VoIP Supply wrote about this back in 2011.

A 20-extension page group means 20 simultaneous SIP calls.

They said in larger applications where paging groups range from 50 to 100 plus users, Unicast paging is strongly advised against.

And there's a certain number of sample rates that are supported, and there's a certain number of audio channels that are supported.

But for example, the difference between Oracast and Unicast.

So Oracast is the broadcast one-to-many.

Unicast is just one-to-one.

The actual audio transport layer for both of those is the same.

And most of the time, you find yourself just trying to overcome what i'm going to call order of operation issues like hey i expect you to do a then wait for an acknowledgement then to do step b wait for an acknowledgement step then do step c and wait for an acknowledgement and uh frankly people have read the specifications and And the specifications don't have that sort of strict behavioral order of operations definition and interpreted the specifications different ways and landed on different ways in which things are supposed to happen.

So multicast means a single sender is distributing one stream to multiple receivers.

Okay, and unicast?

Unicast is just a direct point-to-point transmission.

One-to-one.

Doing this manually, you know, typing IP addresses into spreadsheets for thousands of streams.

Yeah.

So for folks out there, in case you missed the very quick, when Simon ran through it earlier, that's basically, this would be Unicast, correct, Ping? Broadcast.

Broadcast.

Thank