Voip

[andy9]

I have a network which includes 12 computers and 50 VoIP phones on a on premises pbx. There is a ubiquity loco ac at each building with switch. When computers are watching videos call quality is clear but lots of jittering. The jittering is just on external call not internal. We have a meraki MX64 router. We are using Starlink residential. What is my best option?

I am new to all this 

[DarrenOC]

You’ve answered your own question with the comment that the jitter is only on external calls not internal (IP to IP).  Once your calls hit that external connection QoS is out of your hands on a public circuit.

One possible option is to consider deploying a second circuit solely for the purpose of your telephony traffic.

[DarrenOC]

Maybe also consider a hosted telephony solution and make jitter, delay etc the providers problem 😁

[andy9]

I was wondering though if it only happens when the other computers are busy if i can do something in the meraki to give the voip priority. Thanks for the replies.

[GIdenJoe]

If your internet circuit is a regular internet circuit then you can only prioritize outgoing traffic from your calls.  So on the traffic shaping page you can create a rule that matches your VoIP traffic and set the outgoing DSCP to EF.  Also do not forget to set the actual contracted down and upload speed of your circuit all the way on the top of the traffic shaping page.

However incoming traffic will arrive via your ISP in the order it was sent.

So options:
- have the phone lines come directly into your network and use dedicated WAN circuits.
- have a separate SIP trunk that does not mix with your internet traffic.
- apply bandwidth per client limits and set other traffic types to lower priority.