dem 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.

Special Services Center (SSC) or Major Account Center (MAC) serves as
the trouble reporting contact for all (PSAP) troubles reported by
customer. The SSC/MAC refers troubles to proper organizations for
handling and tracks status of troubles, escalating when necessary. The
SSC/MAC will close out troubles with customer. The SSC/MAC will
analyze all troubles and tracks "chronic" PSAP troubles.

Corporate Communications Network Center (CCNC) will test and refer
troubles on all node to host circuits. All E911 circuits are
classified as official company property.

The Minicomputer Maintenance Operations Center (MMOC) maintains the
E911 (ALI/DMS) computer hardware at the Host site. This MMOC is also
responsible for monitoring the system and reporting certain PSAP and
system problems to the local MMOC's, SCC's or SSC/MAC's. The MMOC
personnel also operate software programs that maintain the TN data base
under the direction of the E911 Center. The maintenance of the NODE
computer (the interface between the PSAP and the ALI/DMS computer) is a
function of the MMO