Symptoms:

• NBX ethernet phones keep losing time
• Phone display has wrong time
• IP phones has wrong time

Facts:

• NBX 100
• NBX Operating System
• NBX 100 R2_0_7
• NBX 1102 Business Phone 10 Mb
• NBX Basic Phone
• NBX 100 R3_0
• NBX Chassis

Causes: Time is set on phones via multicast packets

Fixes: This problem should be resolved in NBX 100 version R4.0 Try doing the following:

1- Disable IGMP in all switches

2- Enable IGMP and DVMRP in all routers

3- Reset phone to effect network configuration changes

• Product(s): NBX
• Sub Product(s): NBX 100, NBX Operating System, NBX Phones

— David Gonzalez 2021/04/12 09:50