[WXC/VFX] VFX + SPA3102 + TelstraClear Problem

Forums › Vodafone New Zealand › [WXC/VFX] VFX + SPA3102 + TelstraClear Problem

couchmonster

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Wannabe Geek

Topic # 13201 27-Apr-2007 16:21

I've got a real problem here, with two SPA3102's not detecting a ring from the PSTN.

I figured it's likely to be some voltage thing, seeing as how if I connect the 3102's FXO to an FXS on our PBX - things work fine. But connecting to the Telstra PSTN - things don't work. Anyway, I called Xnet support and confused someone, who should hopefully call me back later. But seeing as how we're an office full of geeks and just happened to have an budget oscilliscope lying under one of the desks - we figured what the hell lets waste some time!

So a couple of surprising things, the two Telstra lines have completely different ringing charactaristics. Both lines switch polarity while ringing, so -50v or whatever so they only peak at around +60 volts and drop to -120v, but for the "silence" between rings - one line holds at -50v, while the other switches back to +50v!?!?!

Anyway, I figure there must be someone in here who can tell me WTF is going on, and who's responsible for the SPA3102 failing to ring on the FXS side when a TelstraClear line is connected to the FXO - Telstra? or Xnet?

FXO - TelstraClear Line 1 (50v on hook, ~50v between rings)
FXS - Standard Telephone
= No ring on FXS

FXO - TelstraClear Line 2 (50v, ~-40v between rings)
FXS - Standard Telephone
= No ring on FXS

FXO - PBX (-25v)
FXS - Standard Telephone
= Yay ringing!!

sbiddle

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Reply # 68684 27-Apr-2007 16:38

Do you have clear forward/answer reversal enabled on your line?

maverick

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WorldxChange

Reply # 68693 27-Apr-2007 18:13

What we have done with these devices is to totally unlock the PSTN side so you have complete control over this part of the device, because as you see already plugging in the FXO to different networks gives you different results and it makes it very hard on my support guys to deal with problems on other networks so you have the options to change the PSTN settings to suit the PSTN lines that you are connected to, most companies will argue who's responsibility it is to sort the problem as you rightly put who will help ?

In saying that being the type of people we are, we do like to help our customers as much as we can even when we could say it's a Telstra connected line, so these devices were interop tested on our network and tested with Telecom PSTN lines on the FXO as well as VFX Lines, so we are happy this works , as for Telstra/Clear Lines no we haven't tested these. Now at this point one of our Guys who did the work on these may be able to help out with some comments but he won't be available until next week, I will chat to him and see what we can do to help.....so you probably won't get a callback from our Tech Support guys as they would need to escalate the issue anyway to my team and I'm sorry I don't drive them that hard.

Hopefully we will post some info for you on Monday...doesn't solve your immediate problem I know but hope this helps.....

Why do we always get the hard ones on Friday Night

......Just kidding feel free to post anytime

Yes I am a employee of WxC (My Profile) ... but I do have my own opinions as well

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couchmonster

3 posts

Wannabe Geek

Reply # 68699 27-Apr-2007 19:20

sbiddle: Do you have clear forward/answer reversal enabled on your line?

eh? wassat?

maverick: What we have done with these devices is to totally unlock the PSTN side so you have complete control over this part of the device, because as you see already plugging in the FXO to different networks gives you different results....

Totaly unlocked? It appears to me that the available options are pretty restrictive (under Voice/Advanced/PSTN Line) I can see fair few configuration heading, but no available configuration options under more than half the headings.... the international control section for example is completely locked out but if I'm led to beleive correctly the following settings should be there:

International Control
* FXO Port Impedance - Configurable to 16 settings
* Ring Frequency - Configurable
* SPA to PSTN and PSTN to SPA Gain Settings
* Ring Frequency - Maximum Setting
* Ring Validation Time Setting
* Tip/Ring Voltage Adjustment Setting
* Ring Indication Delay Setting
* Operational Loop Current Minimum Value
* Ring Time-out Setting
* On-Hook Speed Setting
* Ringer Impedance Setting
* Line-in-Use Voltage Setting

couchmonster

3 posts

Wannabe Geek

Reply # 68701 27-Apr-2007 19:24

Oh, and no worries about rushing a solution over the weekend... Friday afternoon seemed a better time to play with the gear, nobody seems to ring the office after 2pm... well at least not when we're screwing with the phone system heh :)

For now I'm using the the 3rd FXO on the PBX for one of the SPA3102's (only have two PSTN lines) and the second 3102 is hooked between a cordless phone and an FXS on the PBX :)

maverick

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Reply # 68905 30-Apr-2007 08:54

Looking at couple of things at the moment and having some discussions, will hopefully have an update shortly, also looking at the International Options being locked down on the PSTN side, this should have been opened we will amend this as well. Also can you PM your contact number as the one we have logged in the Ticket is incorrect as I found out on Friday Night when I tried to ring you. :)

Yes I am a employee of WxC (My Profile) ... but I do have my own opinions as well

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smiles

20 posts

Geek

Reply # 68912 30-Apr-2007 10:40

Stephen here the VoIP guy Phil mentioned. I have created a new config with all the PSTN options and International settings unlocked. I'm just testing it with my unit now. It will require a factory reset though and re-provisioning. I'll post the details once I'm happy it's working.

Cheers,
Stephen
VoIP Type Guy.

smiles

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Geek

Reply # 68913 30-Apr-2007 11:03

Hi Sascha,

I have created a new config for your SPA3102. I have unlocked all the PSTN settings and the International settings so you can change them to get it working with the Telstra line.

To get it working you will need to do a factory reset on the unit. lift handset, dial **** to get into the menu and then dial reset (73738) and press the # key then press 1 to confirm action and hang up. Once it's been defaulted you will need to put the provisioning link back into the Profile_Rule under voice -> provisioning. You need to be admin and in advanced mode to get to this option.

The profile_Rule is: http://58.28.20.69/configs/default/default$MA.cfg

Once you have that in and have saved the changes power cycle the SPA so it goes and gets the new config. Once it's done that it will get another config and then register. If you log back into the SPA3102 and go to advanced mode then voice -> PSTN Line you should now see 2 new sections which are:
PSTN Disconnect Detection
International Control

Have a play with those and let me know how you get on.

Cheers,
Stephen Miles
WorldxChange Communications

P.S This applies to anyone with an SPA3102. I'll post this under the SPA3102 topic also.