[raoula]

Configs attached

[coolfish]

Raoula,

Please read these comments in the context that we are now using an SPA400 instead of SPA3000 as our PSTN gateway:

The major difference between our SPA9000 configuration and yours is that our PSTN gateway registers with the SPA9000 (and vice versa). There are other postings on this forum that indicate that is not necessary, but as we are looking for differences between a configuration that works and one that doesn't, it may be worth a try.

Other differences on the SPA9000 are as follows (your settings are in brackets following the values we have in our working system):

Sip.SDP Payload Types.AVT Dynamic Payload = 101 (96)
Sip.PBX Parameters.Force Media Proxy = yes (no)

101 is the default value for the AVT Dynamic Payload. Is there a particular reason to have changed it to 96?

You appear to have NAT Mapping Enabled, but are not using the NAT Keep Alive. When I was trying to debug this with Linksys a month ago, they wanted both to be set to yes. As it happens, we now don't have NAT Mapping Enabled at all on our working system.

Do you have a configuration of one of your SPA phones that you can post?

Other than that, the only differences seem to be in the Regional settings, but I can't see how that should effect call transfers.

How long have you been having the XFER problems? Did they appear after you upgraded the firmware on the SPA3000 at any stage?

[raoula]

Hi Coolfish,

The problem has been happening since day 1 - it has not worked ever for me (I updated the SPA3000 firmware before doing anything). I can get a handset config for you shortly to compare.

[raoula]

SPA942 config attached. Any help would be greatly appreciated. I did some more testing tonight, and an internal call between SPA942's can xfer to an outside number no problems, but any incoming calls from external SIP provider or PSTN just drop as soon as an attempt is made to xfer (blind or attended).

[coolfish]

Hi raoula,

Apart from Regional setting differences between your configuration and ours, the following "Ext n" tab settings differ and may be worth a look. Your settings are shown in brackets following the values we are currently using:

SIP Settings.SIP Remote-Party-ID = Yes (No)
Proxy and Registration.UseOutboundProxy = No (Yes)
Proxy and Registration.Outbound Proxy = [blank] (Your SPA9000 IP:6060)

We have also swapped the order of our preferred codecs, but I can't see that should affect anything as we've been successfully experimenting with the different codecs without breaking the overall configuration.

[raoula]

Thanks Coolfish,

What version Firmware are you running on all devices. I have tried with those things changed, still no joy. Anyone else have anything to throw into the ring? Only thing I can think is that maybe the firmware version I have is not working properly for xfer.

Cheers,

[coolfish]

Raoula,

Our firmware versions are:
SPA9000 v5.1.9
SPA3000 v3.1.20(GW)
SP942 v5.2.5

I'd be very interested to know if other people are experiencing the same XFER problems using the latest or recent SPA3000 firmware. Our system used to work fine initially, but our SPA3000 firmware has been updated several times since and stopped supporting XFERs somewhere along the way.

I can sympathise with your frustration with the SPA3000. I ran out of ideas with ours so I took it out of the configuration and replaced it entirely with an SPA400.

[raoula]

I have logged a call with Linksys on this (my firmware is identical to yours also) and will post their reponse when I get it