1) Switching Control Center - E911 translations - Trunking - End office and Tandem office hardware/software 2) Recent Change Memory Administration Center - Daily RC update activity for TN/ESN translations - Processes validity errors and rejects 3) Line and Number Administration - Verification of TN/ESN translations 4) Special Service Center/Major Account Center - Single point of contact for all PSAP and Node to host troubles - Logs, tracks & statusing of all trouble reports - Trouble referral, follow up, and escalation - Customer notification of status and restoration - Analyzation of "chronic" troubles - Testing, installation and maintenance of E911 circuits 5) Installation and Maintenance (SSIM/I&M) - Repair and maintenance of PSAP equipment and Telco owned sets 6) Minicomputer Maintenance Operations Center - E911 circuit maintenance (where applicable) 7) Area Maintenance Engineer - Technical assistance on voice (CO-PSAP) network related E911 troubles
Maintenance Guidelines ~~~~~~~~~~~~~~~~~~~~~~ The CCNC will test the Node circuit from the 202T at the Host site to the 202T at the Node site. Since Host to Node (CCNC to MMOC) circuits are official company services, the CCNC will refer all Node circuit troubles to the SSC/MAC. The SSC/MAC is responsible for the testing and follow up to restoration of these circuit troubles.
Although Node to PSAP circuit are official services, the MMOC will refer PSAP circuit troubles to the appropriate SSC/MAC. The SSC/MAC is responsible for testing and follow up to restoration of PSAP circuit troubles.
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.
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 MMOC at the NODE site. The MMOC's at the NODE sites may also be involved in the testing of NODE to Host circuits. The MMOC will also assist on Host to PSAP and data network related troubles not resolved through standard trouble clearing procedures.
Installation And Maintenance Center (IMC) is responsible for referral of E911 subscriber troubles that are not subscriber line problems.
E911 Center - Performs the role of System Administration and is responsible for overall operation of the E911 computer software. The E911 Center does A-Z trouble analysis and provides statistical information on the performance of the system.
This analysis includes processing PSAP inquiries (trouble reports) and referral of network troubles. The E911 Center also performs daily processing of tandem recent change and provides information to the RCMAC for tandem input. The E911 Center is responsible for daily processing of the ALI/DMS computer data base and provides error files, etc. to the Customer Services department for investigation and correction. The E911 Center participates in all system implementations and on-going maintenance effort and assists in the development of procedures, training and education of information to all groups.
Any group receiving a 911 trouble from the SSC/MAC should close out the trouble with the SSC/MAC or provide a status if the trouble has been referred to another group. This will allow the SSC/MAC to provide a status back to the customer or escalate as appropriate.
Any group receiving a trouble from the Host site (MMOC or CCNC) should close the trouble back to that group.
The MMOC should notify the appropriate SSC/MAC when the Host, Node, or all Node circuits are down so that the SSC/MAC can reply to customer reports that may be called in by the PSAPs. This will eliminate duplicate reporting of troubles. On complete outages the MMOC will follow escalation procedures for a Node after two (2) hours and for a PSAP after four (4) hours. Additionally the MMOC will notify the appropriate SSC/MAC when the Host, Node, or all Node circuits are down.
The PSAP will call the SSC/MAC to report E911 troubles. The person reporting the E911 trouble may not have a circuit I.D. and will therefore report the PSAP name and address. Many PSAP troubles are not circuit specific. In those instances where the caller cannot provide a circuit I.D., the SSC/MAC will be required to determine the circuit I.D. using the PSAP profile. Under no circumstances will the SSC/MAC Center refuse to take the trouble. The E911 trouble should be handled as quickly as possible, with the SSC/MAC providing as much assistance as possible while taking the trouble report from the caller.
The SSC/MAC will screen/test the trouble to determine the appropriate handoff organization based on the following criteria:
PSAP equipment problem: SSIM/I&M Circuit problem: SSC/MAC Voice network problem: SCC (report trunk group number) Problem affecting multiple PSAPs (No ALI report from all PSAPs): Contact the MMOC to check for NODE or Host computer problems before further testing.
The SSC/MAC will track the status of reported troubles and escalate as appropriate. The SSC/MAC will close out customer/company reports with the initiating contact. Groups with specific maintenance responsibilities, defined above, will investigate "chronic" troubles upon request from the SSC/MAC and the ongoing maintenance subcommittee.