The SSC/MAC will also receive reports from CRSAB/IMC(s) on subscriber 911 troubles when they are not line troubles. The SSC/MAC is responsible for testing and restoration of these troubles.
Maintenance responsibilities are as follows:
SCC@ Voice Network (ANI to PSAP)
@SCC responsible for tandem switch
SSIM/I&M PSAP Equipment (Modems, CIU's, sets)
Vendor PSAP Equipment (when CPE)
SSC/MAC PSAP to Node circuits, and tandem to
PSAP voice circuits (EMNT)
MMOC Node site (Modems, cables, etc)
Note: All above work groups are required to resolve troubles by interfacing with appropriate work groups for resolution.
The Switching Control Center (SCC) is responsible for E911/1AESS translations in tandem central offices. These translations route E911 calls, selective transfer, default routing, speed calling, etc., for each PSAP. The SCC is also responsible for troubleshooting on the voice network (call originating to end office tandem equipment).
For example, ANI failures in the originating offices would be a responsibility of the SCC.
Recent Change Memory Administration Center (RCMAC) performs the daily tandem translation updates (recent change) for routing of individual telephone numbers.
Recent changes are generated from service order activity (new service, address changes, etc.) and compiled into a daily file by the E911 Center (ALI/DMS E911 Computer).
SSIM/I&M is responsible for the installation and repair of PSAP equipment. PSAP equipment includes ANI Controller, ALI Controller, data sets, cables, sets, and other peripheral equipment that is not vendor owned. SSIM/I&M is responsible for establishing maintenance test kits, complete with spare parts for PSAP maintenance. This includes test gear, data sets, and ANI/ALI Controller parts.