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f:\standard ioms - current release\42004 instr. manuals\42004-397g.doc
11/09
Hardware Configuration
Mic Bias
Configuration jumper P22 has been provided to enable/disable the bias to the microphone. Set the MIC
BIAS to Y for hands-free telephones, and to N for handset telephones.
Handset Enable
Configuration jumper P29 has been provided to enable audio from the handset microphone only. Set the
Handset Enable (
HNDST
) jumper to Y for handset telephones and to N for hands-free telephones. This
jumper will be factory set for proper default operation.
Inductive Loop Source
Configuration jumper P19 has been provided to set the Inductive Loop Source. Set the Inductive Loop
Source to SPKR for hands-free telephones, and to EAR for handset telephones.
Status Indication
Power
The Power LED located on the VoIP PCBA illuminates when power is applied to the telephone.
Heartbeat
The Heartbeat LED located on the VoIP PCBA will flash once communication over the LAN is
established.
