1st add all your devices to the OBiTalk portal. All your devices will be listed on the dashboard.
You need to use OBi Expert to make configuration changes to all the OBi212's.
This is how to enter and use OBi Expert:
From the OBiTalk dashboard click Edit Profile on the left column.
At the bottom of the page check "Enable OBi Expert..."
Click Submit Query.
Now you can go directly to OBi Expert from the dashboard by clicking on the ICON with the red E to the right of an OBi212.
If you don't enable the OBi Expert button, you need to Click on the gear ICON, select OBi Expert, confirm and select OBi Expert again.
To navigate click on the titles with the + then click on a sub-title.
An example: click on Service Providers then click ITSP Profile A General.
To make a change BOTH boxes to the right of the value must be unchecked.
When all changes are complete on this page, click Submit at the bottom of the page.
OBiTalk will download the configuration changes to the OBi and reboot it.
Wait until this process is complete before continuing to make changes on a different page.
The OBi212 connected to PSTN is OBi1.
The others are OBi2, OBI3 and OBi4.
The following assumes you are using only PSTN and don't have another service provider defined.
OBi1:
Voice Services -> OBiTalk Services -> InboundCallRoute: li
This will route outbound calls from the other devices to Line.
After you get this working we can make this more secure with additional rules.
Physical Interfaces -> Phone1 Port -> Primary Line: PSTN Line
This is the default for the OBi110.
I'm not sure for the OBi212.
Physical Interfaces -> Line Port -> InboundCallRoute:
ph,pp(510222222),pp(510333333),pp(510444444)
Replace 510222222 with the OBi Number of OBi2.
Replace 510333333 with the OBi Number of OBi3.
Replace 510444444 with the OBi Number of OBi4.
This will route inbound calls to the phone port and the other 3 devices.
OBi2, OBi3 and OBi4:
Voice Services -> OBiTalk Services -> InboundCallRoute: ph
This will route inbound PSTN calls from OBi1 to the Phone port
Physical Interfaces -> Phone1 Port -> Primary Line: PSTN Line
Physical Interfaces -> Phone1 Port -> OutboundCallRoute
The 1st rule is: {([1-9]x?*(Mpli)):pp}
Change it to: {(<510111111*>(Mpli)):pp}
Replace 510111111 with the OBi Number of OBi1.
This will route outbound calls to OBi1 via the OBiTalk network.
All devices:
Physical Interfaces -> Line Port -> DigitMap
All routing is based on matching rules in the Line DigitMap
(Mpli) points to the Primary Line's (Line Port) DigitMap
This DigitMap contains rule "xx." which will match 1 or more digits, so will match any number dialed.
You might want to change this DigitMap to explicitly match the numbers you will dial.
The OBi110 default also has these rules:
xxxxxxxS4 Match 7 digits with a 4 second delay
1xxxxxxxxxx Match 11 digits beginning with "1"