Tråd: Bredband stor & hemtelefoni / Telenor SIP password
I figured I'd share this for those with hemtelefoni from telenor.
I had / have the DWR923 modem for a while. The trouble is that I've lost 2 of them already due to overvoltage / lightning strikes, and since they're not sold anymore and difficult to find, I had to find other long term solutions. Finding another modem for internet is easy (the tele2 huawei B593s-22 from netonnet worked out of the box, I don't think it's simlocked at all), but the VOIP part - that's more difficult. The telephone jacks on the B593 did nothing, but then the tele2 firmware doesn't offer voip parameters at all.
For a while I didn't care about the telephone, but after they raised my subscription to 449 SEK, they also added free phone calls to the subscription. With just a small fee for making a connection. Interesting! But how to get SIP working if my DWRs keep blowing up, other products don't auto-magically configure themselves and telenor doesn't want to give the SIP password?
Play with firmware it is. First, get a DWR923. Blocket or something, I was happy to find one for a reasonable price. After that getting the SIP password is actually very easy. Get a firmware version that configures the telephone and that can also export the settings (i.e. OG3611_v220.127.116.11_gui.img). Downgrade the modem and reset to factory default settings in order for the phone to configure and show up.
Head over to /platform.cgi?page=configuration.htm and export the configuration. Open the configuration (notepad++ or something) and search for " config.voip["sipprovider"]["USERNAME"] = ". There your password will be listed.
Great, now for a client. I messed around briefly with some SIP client on my PC (linphone), but didn't get it to work easily. Either way, I want to use a real phone anyway, so lets use the DWR unconventionally.
The modem is not the only thing I lost when lightning struck, as the over voltage propagated over the Ethernet cables and blackened part of my PC motherboard. That oen didn't boot anymore there after. It also backfed over the power supply and destroyed my server motherboard and the power supply on two separate occasions. And I can't avoid it happening again, so my new setup is to air gap the modem from the rest of the network entirely over wifi. Plus to use some sort of over voltage protection on the power supply. Great idea, but that means I can't connect the DWR directly to the antennas anymore, because I want to use it as my SIP box and I don't want to lose it. So how to get it online?
It does have a WAN port. But in recent firmware versions that is turned off. I found a version where it works though: OG3611_v18.104.22.168_gui.img It's old and buggy from what I read, but I only want it for the phone function anyway. Go to ./platform.cgi?page=wizard.htm, select the wizard for IP4 and change the selection from LTE to DHCP. After that the WAN port claimed an IP address from my modem.
You can try to load the config file exported earlier to get the SIP settings in, but that didn't do a thing for me. So I simply copied all info from the config file into the correct places on the voiceNumbers page. /platform.cgi?page=voiceNumbers.htm
One big issue is that it will try to upgrade itself when it has an internet connection. It doesn't actually need the simcard in the DWR for the SIP and internet to work (as we're going over WAN now), so we need to block that updating behavior, otherwise you end up with a version that has no WAN connectivity. Change the ACS server url at /platform.cgi?page=manufacturing.htm to something else that doesn't exist and it won't update anymore.
So now I have my sim in a B593, my SIP settings in an old DWR923 firmware version with WAN enabled and connected to the B593, and my DECT phone connected to the DWR923. Remains just the part of the airgap, but that's just any cheap wifi router in bridge mode between my wired network and the B593.
Couldn't have found the solution without all the info here, so I hope this helps someone else out again. Maybe it works with other SIP boxes as well. I didn't get it to work with a software SIP client, but I haven't tried much there either.
I'm really happy with telenor to be honest. Not the customer service, they couldn't help me find a single solution to get away from the DWR923. But service wise it's great. I'm about 12kms from the nearest tower. Connecting over 800Mhz I get about 50Mbit down, 20Mbit up with 2 yagis. No data limit, and just 0,79kr per call made for 449 SEK a month isn't bad at all. Pretty damn good really.