I have an IPO 500V2 ver 9.1.4.0. It is equipped with 2 ds8 cards and 2 combo cards. Installed Spectrum SIP trunks. The issue is very high jitter, high packet loss (up to 50%) on the sip trunks.Users state no audio on several calls. When the IPO office is pinged, packet latency is 4-6ms, connect directly to either lan1/2. I believe that this issue is causing the high jitter/packet loss. Does or has anyone else seen this type of latency on the IPO500? Any ideas on correcting the issue?