I have a Sipgate account, which enables an internet telephone to be I plugged in anywhere there is a LAN and I will receive calls made to a fixed number - and it’s free! (The line rental, that is, not any outgoing calls made.)
I recently bought a Grandstream GXP-2000 to go with my account so that I don’t have to use my PC to make calls. The technology seemed sound, but I have been having problems registering with the Sipgate network.
Here are the solutions to the problems I found:
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I was unable to download the time or register to the Sipgate network. It appears that part of the problem came from my router/DCHP server reserving an IP address for the phone. Once I removed the reservation rules from my router (a Netgear DG824M), the phone was able to retrieve the time from the NTP server. All this was despite having 'dynamically assigned via DHCP' option enabled in the Granstream Device Configuration. -
I was still unable to register to the Sipgate network. I had been testing the connection with some software on my computer, the Twinkle SIP softphone, which I believe was blocking any connection attempts being made on my Granstream device. I simply closed down the program and my phone connected after a reboot. - (15/1/08) I began having problems again. I changed the router to assign the Grandstream device a static IP in order to open the ports and point the inbound traffic to the correct device. The Grandstream’s settings were to acquire its IP from the router (DCHP server). Once the ports and IP were back in alignment, the device worked fine.