Specifications

Figure 6-1
․ There are staff phones in cubes and offices, and utility phones in public areas.
․ Each phone has one extension, and can call any extension without limitation.
․ Only staff phones can call out to PSTN with a prefix 9.
․ Incoming PSTN calls are answered by auto attendant and could be transferred to any extension.
Configuration steps:
1. Create usergroups named staff, utility, and ext-all.
2. Add staff and utility in the Reachable User Groups of ext-all.
3. Create a user account for each staff and assign it to usergroup staff.
4. Create an additional user account named public and assign it to usergroup utility.
5. Create a device for each physical phone and designate an extension.
6. Assign extensions of staff phones to corresponding users.
7. Assign all extensions of utility phones to share the same user public.
8. Create a route, named pstn with pattern “9.” number of digits stripped “1”, and no prefix.
9. Create a routegroup named pstn-out, and add route pstn only.
10. Create a PSTN trunk with ID “1”, port “1-2”, choose pstn-out as outbound routegroup, do not
select any DID of extension, and select ext-all as the usergroup of privilege.
11. Return to usergroup configuration. For usergroup staff, click pstn1 in Associated Trunks, and
select utility in Reachable User Group; while for usergroup utility, only select staff in Reachable
User Group.
12. Reload the IP PBX Service.
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