Evening all I have an issue that appeared after working ok for a number of months. V11 installation, all updates applied, with Grandstream GXP2124 handsets for clients. When lifting the handset, there is a delay of a couple of seconds before getting a dial-tone, or dialling numbers. Any ideas on what could be causing this? There have been no changes to 3CX or the server OS/LAN infrastructure that we suspect could be impacting/be responsible. Thanks in advance for any guidance/assistance.