AT&T System 85 Headset Adapters , Message Waiting Indicator , 4A, S101A, and S102A Speakerphones, S201A and S202A Speakerphones

Physical Description…………………………………………………………………………………… 4-19
Power ……………………………………………………………………………………………………4-20
Administering the Expansion Module ……………………………………………………………… 4-20
801A Expansion Module PEC Codes ………………………………………………………………4-21
Additional Documents ………………………………………………………………………………… 4-21
Headset Adapters …………………………………………………………………………………… 4-25
Applications ……………………………………………………………………………………………4-25
Physical Description…………………………………………………………………………………… 4-25
Power ……………………………………………………………………………………………………4-26
Considerations …………………………………………………………………………………………4-26
Headset PEC Codes …………………………………………………………………………………4-27
Message Waiting Indicator ……………………………………………………………………… 4-31
Applications ……………………………………………………………………………………………4-31
Physical Description…………………………………………………………………………………… 4-31
Power ……………………………………………………………………………………………………4-31
Message Waiting Indicator PEC Codes ……………………………………………………………4-32
4A, S101A, and S102A Speakerphones……………………………………………………… 4-35
Applications ……………………………………………………………………………………………4-35
Physical Description…………………………………………………………………………………… 4-35
Power ……………………………………………………………………………………………………4-36
Considerations …………………………………………………………………………………………4-36
Speakerphone PEC Codes…………………………………………………………………………… 4-37
S201A and S202A Speakerphones …………………………………………………………… 4-41
Applications ……………………………………………………………………………………………4-41
Physical Description…………………………………………………………………………………… 4-41
Power ……………………………………………………………………………………………………4-42
Considerations …………………………………………………………………………………………4-42
S201A and S202A Speakerphone PEC Codes …………………………………………………… 4-42
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