Route66
Regular Member
I bought a grandstsream HT812 and have set it up with A&A. It works fine for calling out but after a short period will no longer receive calls. If I place an outgoing call, incoming calls will again work for a short time.
Currently it's linked to 4G+ internet via a tp link MR600 and a lebara sim.
It's as though the incoming connection goes to sleep. I've played with:
Registration expiry time
SIP OPTIONS/NOTIFY Keep Alive Interval
stun server
For all of these I have set it to the lowest time hoping that the grandstream will work to keep the connection going from my end.
As it's 4G+ router I know I wont have a public IP, but again it works for outgoing all the time and incoming for a short period. It has been suggested that my network operator may be closing NAT sessions aggressively, which is why incoming calls fail after short time.
Can anyone shed any light or help me to get this to work? Is the problem likely a network operator issue and if so would switching to another network, such as three, fix it?
Currently it's linked to 4G+ internet via a tp link MR600 and a lebara sim.
It's as though the incoming connection goes to sleep. I've played with:
Registration expiry time
SIP OPTIONS/NOTIFY Keep Alive Interval
stun server
For all of these I have set it to the lowest time hoping that the grandstream will work to keep the connection going from my end.
As it's 4G+ router I know I wont have a public IP, but again it works for outgoing all the time and incoming for a short period. It has been suggested that my network operator may be closing NAT sessions aggressively, which is why incoming calls fail after short time.
Can anyone shed any light or help me to get this to work? Is the problem likely a network operator issue and if so would switching to another network, such as three, fix it?























