I am using the Grandstream HT-488 with voipfone since last 2 months. It has been configured as suggested by the voipfone. For one month it was working allright with loss of service occasionaly. Since last 10-15 days it looses connection with the voipfone and to establish the connection I have to reset it. After resetting it works fine immediately but soon the red LED starts blinking and I have to follow the same procedure again and again. I initially thought that there may be a problem with my DSL connection but it is not so, I tried registering it with Voiptalk as well as Skypho the connection remains and works fine. I have experimented using with and without the outbound proxy (nat.voipfone.co.uk:5065) but to no avail. I have also tried by changing the registration expiration time (currently set at 1 minute) but the problem is persisting and it has become annoying. I am using the latest fimware 18.104.22.168. Can anyone guide me to solve the problem? I do not wish to discontinue the voipfone subscription as it is very feature rich, the rates are good and quality of sound is also excellent.
Last edited by drparwez on April 1st, 2006, 11:46 am, edited 1 time in total.