American Audio VELOCITY - REV 4-05 Betriebsanleitung PDF herunterladen (Seite 108)

METRO RAIL DESIGN CRITERIA SECTION 9 / SYSTEMS

DE304.09 9-103 Revision 4 : 05/09/12

Metro Baseline Re-Baseline: 04/29/10

Instruments in this group shall be identical electrically and physically to the Type “A”

ETEL, except for distinctive activation buttons and signage to differentiate them from

ETEL instruments.

See Provisions for individuals with Disabilities for ADA requirements.

9.7.6 Maintenance Telephone (MTEL)

The MTEL group shall provide access to the dial telephone system for maintenance

personnel working in the Metro System. MTEL access shall be identical to “B” Type

ETELS – standard black wall phones (2554 type with G6 handsets or equivalent).

They shall be able to dial other phones within the Metro system using the 5-digit

extension.

As a minimum, specific telephone locations shall include:

• TC&C buildings or cabinets

• Signal bungalows or cabinets

• TPSS building or rooms

• Auxiliary power rooms

• Electrical rooms

• Elevator machine rooms

• Cross passages

• Staff security rooms

• Mechanical rooms

• Emergency fan rooms

• Custodial rooms

• Ejector rooms

• Sump pit rooms

• Toilet rooms

• Fan rooms

9.7.7 Installation and Number of Telephones

ETELS and MTELS installed in ancillary rooms should be within 15 feet of room

entrances, and all must have a 25 foot handset cord. If the room is larger than 30

feet, there shall be an additional MTEL. TC&C rooms in underground stations shall

have an ATEL, and sufficient MTELS so that all equipment is within reach of a

telephone. All phones must have independent lines.

ETELS in public areas and ancillary emergency egress routes shall be placed in

accordance by code for manually activated alarm-initiating devices (NFPA 17.14).

9.7.8 Public Telephone Service

Facilities for implementing Public Telephone service at or adjacent to station

platforms shall be coordinated with the local telephone company. Such facilities

may also be provided in free areas. In any case, the location shall not interfere with

pedestrian flow.

9.8 TRANSIT PASSENGER INFORMATION SYSTEM (TPIS)

TPIS shall function as a combination of Public Address and Visual Message Signs subsystems

providing audio and video information to the passengers and Metro personnel.

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