Hello,
I have just configured 2 SPA3102 in our network.
I used the setup guide of axon instead of the manual of the pinned topic. url: http://www.nch.com.au/hardware/setup/fxo.html
I have the two units working just fine. Configuring like this, I don't need a extension to ring to the group, the configuration of the external line in AXON is set to group 701.
The things I have different from the setup guide is:
In the SPA3102 Web Configuration:
In the guide they say to Set 'NAT Keep Alive Enable' to yes and blank out the 'NAT Keep Alive Msg' field. I din´t it is not necessary if you are working with fixed IP address.
In the guide they say to Set 'PSTN Answer Delay' to 2. In my case I have to put 4 (For CID to appear)
In the guide they say to Set 'Detect PSTN Long Silence:' to yes , and set 'Detect VoIP Long Silence:' to yes. I have both set to No.
One other thing is, you must set to No the PSTN Ring Thru Line 1. This let´s the axon manage the incoming call and the phone connect in the FXS port only rings if you set in axon configuration.
Hope it helped.
Bruno Abreu