Voip thru mobile vpn

efes9999

Has anyone had any experience with VOIP thru mobile IKEv2 or SSL VPN (full tunnel)? We tried one test call on M370 and encountered voice quality issues (choppy audio) though there was plenty of bandwidth and the firewall was pretty much idle.
We are planning on getting the new M590 to create up to 500 vpn sessions that will be used for voip calls, but if M370 cant even handle one call, we are not sure if M590 can handle that many.

Thanks,
Matt

Bruce_Briggs

IKEv2 will likely be much better than SSLVPN.
One option on SSLVPN is to use UDP instead of TCP for the Data Channel.

What are you seeing using monitoring tools over 1 of these VPN sessions to your VoIP server?
One tool type is a ping tool, such as PingPlotter which will show the latency through the tunnel, and if run outside the tunnel to the firewall IP addr or the customer endpoint IP addr will show the latency along the path that the VPN tunnel takes.

james.carson

SSLVPN not perform as well as IKEv2 under most circumstances. Using IPSec or IKEv2 will generally give you better performance.

The choppiness will generally be due to missing/out of order packets and/or traffic timing out due to latency. This will generally be more a function of the path the traffic is taking than the firewall type or capacity, especially if it's happening with just one connection.