Problem with SPA3000 PSTN dial-out back-to-back with SPA1001

[MicrostormHK]

Dear all,

I'm hoping the someone can help (or at least have the same problem with a troubleshooting direction)...

My current config consists of a SPA3000 with FXO connected to a SPA1001. I have a local DID config on the SPA1001 and as a stand alone device, everything is working without a problem (incoming/out-going calls/ caller id).

But when I connect the 1001 FXS port to the 3000 FXO port, things are a bit different. Incoming call from 1001 (PSTN) to VOIP works fine (via a PiaF box) -- but outgoing is not dialing. I get the correct "Last Called PSTN number" from the 3000 -- and at the same time when I look at status at the 1001, I get "Dialing" but seems that no digits are getting thru...

I've tried different dtmf settings as well as confirmed that the "phone" setting at the 1001 matches the "regional" setting in the 3000.

Really lost and whould like some expert advise...

[hwittenb]

Sounds like a tough one.

I assume you are trying to bridge an incoming voip call on the SPA3000 to an outgoing call on the SPA1001.

I would try to isolate the problem to the incoming voip call to the SPA3000 or the FXO interface to the SPA1001.

Can you dial a call on the FXO port using a handset attached to the SPA3000? You need to have something in your SPA3000 Line 1 dial plan to do this, of course.

The dtmf settings are for the digital transmission of the tones. The FXO interface is an analog interface so the adapter converts the tones from digital to analog for transmission across the FXO interface. Have you tried adjusting the SPA to PSTN gain on the PSTN Line tab?

[MicrostormHK]

Some more details on my setup:

SPA-1001 -- Line 1 Voip via vbuzzer with Toronto DID
SPA-1001 -- Line 2 HKBN 2B with HK DID (Default outgoing line)

I'm currently in Hong Kong and with only the SPA-1001 everything works fine. I connected an analog phone to the FXS port and can send/receive calls from both lines with full incoming CID...

Now I added an SPA3000:

SPA-3000 -- FXO connected to FXS of SPA-1001
SPA-3000 -- FXS connected to Analog phone

I'm starting my testing from scarch -- hence factory reset SPA-3000 frist

Without power to SPA-3000 -- FXS to FXO pass thru with no problem (in/out CID okay).

Now with factory setting and only the following change:

Line-1: Make Call / Receive Call without reg (so that I get dial tone from line 1)

Line-1: added <#9,:>xx .<:@gw0> to dialplan

=================
When I place a test call with #9 I get the second dialtone from SPA-3000 then proceed to dial the number 96300000

I get a soft click after about 1 sec and no sound after.

Pls see attached syslog for both devices. Pls note that 192.168.1.122 is the SPA-3000 and 192.168.1.222 is the SPA-1001

Need an expert to help me debug my problem

Thanks in advance

[hwittenb]

I put the log into a spreadsheet and sorted it by ip address which seemed to help somewhat to sort it out.

The log shows the following for the SPA3000:
Taking the handset off hook and dialing the number.
Sending the number to the voip-to-pstn gateway
Taking the FXO port off hook.
Hanging up handset.
Putting the FXO port back on hook.

The FXO port was off-hook for 54 seconds.

The log shows the following for the SPA1001:
Taking the Line 0 FXS port off hook right after the SPA3000 FXO port went off hook
Putting the Line 0 FXS port on hook right after the SPA3000 FXO port went on hook
The log does not show that the SPA1001 Line 0 took any dialing action.

The log shows some activity for line 1 that is not relevant to the problem, namely Line 1 sending Keep Alive messages and a Register Request with associated STUN activity.

The most likely theory consistent with the above seems to me to be the SPA1001 did not receive the dialed digits. I would try increasing the SPA3000 SPA to PSTN gain in small increments to see if it makes any difference. It seems like the SPA3000 sent the digits and was waiting for a response. The call disconnected when the caller hung up.

You said you reset the SPA3000 to factory specs which would mean that the voip-to-pstn gateway was set for One Stage Dialing and the pstn line dial plan was (xx.) which is as it should be.

Edit: On second thought, if the SPA3000 is set to factory specs the dtmf transmit method is set to Auto. That probably means sending dtmf inband. Change that to AVT to see if there is a problem sending the dtmf inside the SPA3000. It is hard to believe there would be because people dial on the FXO port all the time but check it and see.

[MicrostormHK]

Thanks hwittenb for the prompt response and advise. It's still not working for now and I've try both increasing gain level as well as changing the DTMF Tx to AVT. Same slience after I dial the number.

I also notice that I might not be getting dialtone from FXO. Can you point me to how dialtone is setup on both the SPA-1001 and SPA-3000?

Again, if I power-off the SPA-3000, I can dial thru without a problem.

I'm still hoping it's a SPA-1001 / SPA-3000 back to back config problem and not a hardware fault of the SAP-3000

Anyways, really appreciate your help and hope you can continue to help. Let me know how I can test. I will also see if I can try the box with a REAL PSTN line here in HK.

[MicrostormHK]

Ok....one more thing I notice:

If I power off SPA-3000, I can use the Line-1 connected phone and get dial-tone from SPA-1001 and both green light from SPA-3000 and SPA-1001 will light.

However,

If I power on SPA-3000 and unplug the network cable, SPA-3000 should fallback and let me dial-thru but when I put the phone off-hook, both green lights come up as expected but I'm not getting a dialtone from the SPA-1001.

What do I need to do to fix this?

Please help

[hwittenb]

Originally Posted by MicrostormHK

If I power off SPA3000, I can use the Line-1 connected phone and get dial-tone from SPA-1001 and both green light from SPA3000 and SPA-1001 will light.

If you power off the SPA they have a mechanical relay that closes and you are attached directly to the FXO port.

If I power on SPA3000 and unplug the network cable, SPA-3000 should fallback and let me dial-thru but when I put the phone off-hook, both green lights come up as expected but I'm not getting a dialtone from the SPA-1001.

If you have automatic fallback set and Line 1 is not registered it is supposed to dial a call on the FXO port. It works a little differently though and doesn't dial the call until after you enter the digits.

I didn't mention the voltage level on the FXO port. Check that and see what it is. You can read it on the SPA3000 Info Tab. With the SPA1001 on hook the voltage level should be higher than the "Line in Use" setting which has a defalut of 30. With a PSTN line the voltage is usually around +-48v. The SPA3000 won't take the FXO port off hook to dial a call if the voltage is lower than the Line in Use setting. I didn't mention it because the trace showed that it does take it off hook and the SPA1001 responds and it goes off hook.

I'm away from home, but later tonight I have a SPA3000 and a SPA1001 and I'll try it.

[hwittenb]

I ran the SPA3000 attached to the SPA1001 as we have been discussing. It worked. I reset both adapters to factory specifications. I modified the SPA3000 dial plan adding the element |<#9,:>xx.<:@gw0>|. I added a voip account to Line 1 of the SPA1001. I added system time server to both. I dialed a call from the handset of the SPA3000 and it went out on the voip line of the SPA1001.

Actually in testing I made a mistake with the dial plan element in the SPA3000 forgetting the colon ( : ) after the #9 and it caused very weird results. It gave me a dial tone from the SPA3000's voip-to-pstn gateway. After I discovered and fixed that everything was OK. Cost me some time before I figured out that I made a mistake.

Attached are the final configurations I used. I also made separate sip trace log files of each adapter making the call. They were two different calls, actually, so the times aren't related.

For the debug trace, I used the downloadable Sipura syslog program. I actually liked your syslog program better, but the other syslog capture program that I had that was close to your program but it was not quite as good (or maybe I didn't understand it) so I didn't use it. What program are you using for the syslog capture?

Edit: Actually there might be a few more non default settings that crept into the SPA3000 during my debug of my mistaken dial plan. I do have Make and Receive Call Without Reg YES (I think the Make Call is required to get a dial tone if you don't have a provider registered) and I have Auto Fallback NO (which I don't think makes any difference)