Overview of the UCAR Telephone System

NCAR Telephony is provided by a mix of PBXs and IP Telephony. The Mesa Lab is the telephone systems’ hub. This site is the primary access for incoming and long distance connectivity and has connectivity for Jeffco, Marshall, Center Green and Foothills systems. These systems are built around redundant processing and are supplied by UPS at all locations. Voice Messaging systems are collocated with the telephone systems in all of our facilities and are supplied by the same power as the telephone systems.

All of the sites have access to local trunks, which in an extended outage of the Mesa system, can be reprogrammed to provide access to long distance service.

In the event of power loss (with the UPS expired), an analog trunk provides access for the security officers to external parties. Elevators at all sites have telephones that ring to the guard desk for assistance. In the event that the telephone system is down, elevators are also connected to trunks for access to 911. Pay phones that are independent of our telephone system are available in the Mesa lobby, FL2 east corridor, CG1 lobby and FL4 lobby. A separate Qwest line has been made readily available at the Jeffco facility in their computer room. There are also several independent modem lines available throughout our facilities for use in the event of extended outages.

Backups

The telephone and voice messaging system databases are backed up weekly onto tape, and the tapes are changed every month. Details may be found at

http://www.scd.ucar.edu/nets/docs/teldoc/telecommunications.htm

Critical Spares

NETS maintains an inventory of tested spares for the major components of the telephone systems. These components are kept in stock at FL 3095 and ML 29 & 36A. Details may be found at http://netserver.ucar.edu/nets/inventory/

Major Outage Procedures

Contact telephone service providers to redirect calls to an alternate location. (MCI or ICG).

Instruct telephone service providers to place recordings on unavailable numbers. Provide a telephone number to contact for further information (switchboard if available)