AT&T MERLIN 410 Service Manual page 13

Preinstallation (cont'd)
(CS 2500DMG) POWER FAILURE
(CS 500DM) POWER FAILURE
"TOUCH-TONE" TELEPHONE (61210)
ROTARY TELEPHONE (61209)
(335A) AUXILIARY POWER UNIT
(S102A) HANDS-FREE UNIT
(502A) HEADSET ADAPTER
(3165-APU)
(3163-HFU)
(3164-HFA)
Figure 2 (4 of 6)
9