The HHG2500 has dropped out 10 times in 24 hours the last one was at 21:42 there was 5 dropouts within 10 minutes @7pm this is just ridiculous fault reported to vodafone
Did they try fobbing you off with the "Give it 10 days to settle" thing? They didn't like it when I said I knew that was for ADSL not VDSL
Before I joined, I read that their router was a Huawei model, so felt reasonably happy that it would work OK on my line, given the good experience I'd had with the HG612 and the Huawei cabinet with Infinity. So I was really surprised to see the HHG2500 behaving so badly on my line.
I feel particularly sorry for those joining Vodafone who didn't have a previous FTTC supplier. They might get banded due to the VF box's crapness and think that's just what their line is capable of. At least we know
that the problem is the VF box.
I got my details via the Live Chat option -- after a few tries. On the phone, they said exactly the same to me as you've reported.
As for extracting the info from the router itself, here's what I think we know so far:
- After the initial connection, the router is configured with the user-specific PPPoE details via TR-069.
- The firmware is also upgraded, with the side-effect that the router configuration is then only available in an encrypted form.
- VF appears to use a standard PPPoE login - no odd use of DHCP options a la Sky.
- If other Huawei modems are an example, then the router firmware will contain an AES key used to encrypt the configuration.
- Other Huwaei devices have had their AES key extracted from their firmware, and tools are available to decrypt/re-encrypt their config files (e.g. https://hg658c.wordpress.com/2015/03/17/hg658c_configtool/)
- The HHG2500 does not use the same key or (possibly) even the same kind of encryption, as these tools do not work with the HHG2500's configuration file.
- VF PPPoE details are of the format firstname.lastname@example.org, where n represents a digit, with alphanumeric, uppercase/lowercase-mixed passwords
- The HHG2500's main board does not appear to expose a serial console, although several vias/unpopulated headers appear to be of the correct number of contacts for a serial line or JTAG header.
- The WAN port, covered by a 'not in use' sticker, is indeed very much unresponsive -- not even establishing a hardware link.
- The current VF box's firmware has several issues, including:
- Unstable VDSL connections on known-good lines, leading to banding of the connection by DLM.
- Poor performance with ~>5 client devices.
It ain't pretty, is it?
[EDIT]: As for the CCF file itself, I'm reasonably sure it's been cryptographically encrypted, given Huawei's got some previous form doing that. I wish I had the mad skillz necessary to poke through the device's address space via JTAG and extract the key. Sadly, I don't.