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 | RCV56HCF PCI/CardBus Modem Designer’s Guide | 
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 | LCS_L1# | 
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 | IRING_L1# | 
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 | VOICE# | 
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 | OH_L1# | 
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 | CID_L1# | 
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 | VC_L1 | 
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 | TXA1_L1 | 
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 | TXA2_L1 | HYBRD | SSI | 
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 | RXA_L1 | & | SURG | 
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 | TEL LINE | |||
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 | XFRMR | 
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 | PROT | 
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 | BRDGE | 
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 | CALLID | OH | 
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 | RELAY | RELAY | CUR | 
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 | TELOUT_L1 | 
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 | SRC | 
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| RCV56HCF | TELIN_L1 | 
 | HANDSET | 
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 | HYBRID | 
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| MODEM | 
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 | RNG | TEL HANDSET | 
| DEVICE | 
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 | VOICE | DET | 
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 | RELAY | 
 | LCS | 
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 | TELEPHONE LINE/TELEPHONE HANDSET | ||||
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 | INTERFACE CIRCUIT | 
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 | MIC_M | 
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 | MIC_V | 
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 | BIAS | 
 | MICROPHONE | 
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 | SPKROUT_M | 
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 | AMP/ | 
 | HEADPHONE | 
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 | SOUNDUCER | 
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 | (OPTIONAL) | 
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 | AUDIO/HEADPHONE | 
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 | INTERFACE CIRCUIT | 
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Figure 1-3.  Typical Audio Signal Interface (U.S.)
| ROCKWELL PROPRIETARY INFORMATION | 1129 | 
