I have a Mitel 250 version 6.3, DHCP is enabled. Issue is there have been a few instances where all phones show the error 'Waiting for ack' - resulting in no inbound/outbound calls.. Rebooting seems to resolve it each time..
Initially thought it could be the DHCP lease time, but it's set to 1 week which doesn't match up with the times between when this is happening.
Any ideas?
