NEC nd-20292 manual Figure ZOO-47, Music on Hold

Figure ZOO-47

Figure 200-48

Figure 200-49

ND-20292

CHAPTER 2

APRIL, 1990

SECTION 270

OPTIONALEQUIPMENT

CONNECTION

270.1MUSIC ON HOLD

Provision has been made to allow connection of a locally provided external music source to provide Music On Hold for held calls.

Music source input is made using the phono jack MOH located on the TSW-E( ) ETU. For music source input level and impedance, refer to Section 220.20 of this document.

NOTE: In compliance with FCC Part 15 regulations, the following procedure must be implemented any time a Music On Hold source is connected to this system.

A.Make a slit on the cable insulation approximately one and one half inches long, at a distance of 12 inches from the plug end, on the cable to be connected to the TSW-E( ) MOH jack.

Take special care not to cut into the shield wire and inner wire insulation.

B.Make a circular cut in the cable insulation at one end of the slit.

C.Pull the cut insulation from the cable to expose the shield for the length of the slit and cut the insulation off.

D.Bend the cable near the middle of the exposed shield and separate the shield from the inner insulation in preparation for soldering, refer to Figure 200-51.

E.Obtain a 7 inch length of 20 - 24 AWG stranded wire and connect a ring tongue type connector at one end.

F.Strip a + inch length of insulation from the other end of the 7 inch wire. Solder this end to the shield previously exposed in step C, place tape around this connection to prevent the possibility of any unwanted short circuits.

G.Connect the plug end into the TSW-E( ) MOH jack.

H.Route the cable down and to the right side of the CCU to avoid interference with the insertion and the removal of ETUs. Exit the other end of the cable at the right rear side of the CCU.

200-41