Figure 6-10.--Schematic diagram of the type G modular telephone set.

and restricted type G sets, except for the modular

Modular Telephone Set

connectors. Each enclosure has a schematic diagram

There are six models of the type G modular

(fig. 6-10) pasted inside it for convenience in

telephone set: a desk-mounted nonrestricted, a

troubleshooting.

desk-mounted restricted, a bulkhead-mounted non-

watertight nonrestricted, two bulkhead-mounted

Preventive Maintenance

nonwatertight restricted, and a bulkhead-mounted

watertight nonrestricted. Each model is comprised of

The type G (version 1) telephone set, due to its

two units: the telephone set and its respective enclosure.

simple design, requires very little preventive

The components and operation of the type G

maintenance. Most routine tests are performed during

normal operation of initiating and answering calls.

modular sets are identical to the basic nonrestricted

Figure 6-10.--Schematic diagram of the type G modular telephone set.