Pub. 42004-501C
Division 2 VoIP Telephones
—Wired and WiFi
Page 5 of 22
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Internal
Model 351-7xx VoIP Telephones
The power supply, input power terminal block, relay PCBA, ringer and shield are mounted in the rear
enclosure. The VoIP carrier PCBA, VoIP circuit PCBA, amplifier PCBA, handset/headset adapter
PCBA, and keypad PCBA are mounted to the front cover. Amplifier-only versions do not include a
keypad PCBA (see Figure 3).
Model 351-8xx VoIP Telephones
The power supply, input power terminal block, relay PCBA, ringer, shield, and Div. 2 external antenna
are mounted in the rear enclosure. The VoIP/WiFi carrier PCBA, VoIP circuit PCBA, WiFi module,
amplifier PCBA, handset/headset adapter PCBA, and keypad PCBA are mounted to the front cover.
Amplifier-only versions do not include a keypad (see Figure 4).
Figure 3. Model 351-7
xx
Div. 2 VoIP Telephone
