[Asterisk-Users] Welltech FXO: initial tests

[Claudio Loletti]

Hi,
I'm using the Welltech pstn GW 3804 (four analogue ports) and in some 
way I agree with Jorge's points.

I am also using two Welltech SIP Phone LAN 201
I set them in proxy mode.

I am still left with some problems.

I can talk between the two SIP phones only with reinvite (I cannot talk 
when * stays in the middle)

I can call the outside pstn line through the GW, but I cannot hear the 
ringing tone (from the caller) and cannot speak.

When I call from pstn, the gateway answer after the specified number of 
rings but it does not forward the call to the lan phone extension.

I set the GW in peer to peer mode.

I will attach the * config files and the welltech phone and gw 
configuration if needed.

Any help is really appreciated.

Claudio

> Hi,
> 
> After a long way of problems (shipping, customs, etc) finally I got 
> Welltech working. Here below my comments.
> 
> - The documentation is poor and have errors
> - The web configuration is not complete. However is useful for the basic 
> configuration parameters. The command line is necessary for modify all 
> parameters.
> - The software upgrade is easy. Initially the gw came with H323, we 
> upgrade to SIP.
> - We have tested only one port, it works well, audio quality is good (alaw).
> - Outgoing and incoming calls are working ok.
> - The Caller ID (from PSTN side) does not work
> - Answer supervision (reversal polarity detection) seems to work fine. 
> This feature is very important to us, is the first time that we found 
> this feature in a analog CO trunk. In a test application where we play a 
> voice message to the called user, the message start to play just after 
> answer. Tested with wire phone and cell phones.
> - Disconnect tone seems reliable (although the default configuration was 
> not adjusted).
> 
> We have done dozen of test in order to get the gw working. During the 
> tests two issues came up, they need further analysis and tests:
> - Two times a UDP packages loop between the gw and * saturated the 
> bandwidth after a hung up. Rebooting the gw does not stop the loop. Even 
> with the gw turn off, * was sending the packages.Only rebooting * turn 
> the system normal.
> - The gw port stay locked after a hung up. Apparently due to a no 
> detection of the disconnect tone (in this case the tests were carried 
> out with a PABX without disconnect tone). But the * user (SIP) was hung 
> up and it seems that there are not a release timer.
> 
> We will continue the tests and test the Welltech technical support as 
> well (no required until now).
> 
> Jorge


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Claudio Loletti (Lollo) mailto:claudio.loletti at email.it
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