I have 2 SG500X switches, between master / backup switches I use a fiber cable connected on S3/S4 port (S3 on master, S4 on backup), the stacking mode used is "Native Stacking" (default configuration) in L2. When I change my vlan configuration (like ...

Hello,I have a little problem with my UC540 (last os update ok). When I make an outgoing call, I type the prefix 0 for outgoing and make the others numbers but it take 12 to 15second to execute the call and get the first ring (in my phone outgoing pl...