W73H Remote Phone Directory

[smithgt]

I was happily using a remote phone book, but it's recently stopped connecting. The XML is hosted on my nas, and was feeding data for incoming calls. I could also open the phonebook and scroll through all the directory entries.

Now only the phone number is display, and when trying to manually open the phone book, I can see the name "Display Name" I provided, but the handset reports a "Connect Error!"

There is not other information provided.

I've checked the URL stored in the Remote Phone Book field - https://nas/Yealink.xml

I can access this URL from my desktop browser.

How can I troubleshoot why the handset can't see this URL any more?