Feng.HT802 wrote:Thank you very much for answering my question.
Since year 2011, I have used voip phone just on one phone number from another phone provider.
They may have allowed more than one SIP registration per account or offered sub accounts.
When I transferred my phone number to FPL, I found that SPA122 was discontinued so I decided to purchased a HT802, which also has two ports.
With Freephoneline, you might be interested in Obihai OBi202, which has more powerful call routing features. Visit
viewtopic.php?f=15&t=18805#p76546 for more information.
I am not recommending that you buy one, but if you're interested, you can find more information there.
Visit
viewtopic.php?f=8&t=19236&p=75454#p75454 for a related alarm configuration thread using an OBi202.
I believe that the port in SPA122 for alarm can be used for regular phone connection.
That doesn't change the fact that FPL only allows one registration per FPL account and that SIP registration is a requirement for incoming calls.
Only one registration per FPL account is allowed at any time. When you enter your FPL SIP User ID and Authenticate Password for FXS Port 1 and have "SIP Registration" set to "yes", that counts as 1 registration.
If you also enter the exact same FPL SIP User ID and Authenticate Password on FXS Port 2 and have "SIP Registration" set to "yes", that counts as 2 registrations, and that configuration won't work properly with FPL for incoming calls. Only one registration per FPL account is allowed at any time. If one port is registered, and the other port attempts to register as well using the same FPL account, the previously registered port will lose registration and incoming calls will not ring on it. Only the most recently registered port will work for incoming calls.
It's not possible to register the exact same FPL account simultaneously on more than one SPA Line or Grandstream FXS port. Each SPA Line or Grandstream FXS port's SIP registration is considered a separate registration.
Obihai OBi202 has a setting that allows incoming calls to ring both phone ports with a single FPL account registration.
You said that FPL supports 2 channels. Do you mean that we have set two channels with two phone numbers?
No. Each FPL account only supports a single phone number, and you are trying to register the exact same phone number on both ports. That can work for outgoing calls but not incoming.
FPL allows any combination of two simultaneous channels (or calls) at any given time (1 outgoing and 1 incoming; 2 incoming; or 2 outgoing) per FPL number or FPL account.