I am experiencing the following problem:
Shortly after registering (i.e. logging in) my various clients (two extensions as Sipdroid on Android, one through a Grandstream HT701) both in- and outbound calling work fine.
Then, after some time (probably about an hour or two), inbound calls will not ring, while the "status" display on the pbxes website is still showing the phone ringing. It is irrelevant whether the call is coming from an internal extension or an external number. If I re-start one of the clients (or make an outgoing call), then inbounds will generally ring again for a while.
Seems like something is going stale in these connections. Any ideas how to fix this?