I've used Ixia for similar purposes (nothing related to voip stuff
though), but as others already said equipment cost is a factor here.
If the budget is short or if you're willing to go with an open source
suite for testing, you might want to have a look at Pktgen-DPDK too:
https://github.com/pktgen/Pktgen-DPDK
There are tons of tutorials out there explaining how to use Linux +
pktgen-dpdk to generate traffic. I hope it helps.

Cheers!

On Thu, Aug 26, 2021 at 2:07 PM Joe Yabuki <joeyabukiyin@gmail.com> wrote:
>
> Hi all,
>
> I just wanted to know how you do your network testing when validating a new design/technology in your Network, especially to ensure that it will meet your SLA requirements for example that a voice call will not be dropped in case of a network element failure ?
>
> Do you test with IXIA, multiping, launch somes VM using ping with -i option, Windows ping by setting the timeout interval, or may be directly from the Network device (routers...),
>
> Many thanks,
> Joe