Welcome back to the community and thanks for taking the time to post. I'm sorry to hear that you're having issues with phone service, has the advice from @BenMcr helped you with this issue?
Unfortunately, I've already tried that & it didn't work. The manual for my DECT phone gives me different timings for the Recall/Flash button. Would you happen to know what it needs to be set to for your network?
Thanks for coming back to us @yehudi, unfortunately we wouldn't know the settings that you would need to apply to use the phone over our network. We only have the user guide that @BenMcr has supplied on his post.
We'll, I'm not going to be able to find them anywhere else. It's your network so someone within Virgin must be able to help. Otherwise, what's the point of having them.