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EM91850 데이터시트(PDF) 4 Page - ELAN Microelectronics Corp |
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EM91850 데이터시트(HTML) 4 Page - ELAN Microelectronics Corp |
4 / 20 page * This specification are subject to be changed without notice. 4 4.28.1999 EM91850 TONE/PULSE DIALER WITH HF, HD, REDIAL AND VOLUME CONTROL FUNCTION Preliminary FUNCTION DESCRIPTIONS Dialer Option selection The EM91850 incorporated a special keyboard scanning function that is connecting a resistor ( typically is 560 K Ω ) on keyboard scan pin to select many telephone specifications. The specifications are described as follow : a. M/B ratio K2 M/B ratio NR 40:60 R-Vss 33:66 b. Auto Insert Pause time d. Mode K3 Auto Insert K5 Mode Pause time NR Disable NR Tone R-Vss Enable R-Vss Pulse Normal Dialing : Press the digital key directly on keyboard which number can be dialing out and stored in LNB memory auto matically. Operating procedure described as following: • To select Pulse or Tone mode. • Off-Hook or turn on HF function. • Keying d1,d2,....dn. The "d" expressed digital key pressed that include 1~9, *, 0, #, P, and P →T keys. The "n" expressed unlimited. • The numbers d1,d2,......, dn will be dialed out in Pulse or Tone mode as selection. LNB Redial Function : Storing : In normal dialing mode, every digital key was entry which number will be stored in LNB memory automatically. If entry digits are more than 32 digits, the redial function of LNB memory will be disabled, otherwise, these numbers stored in LNB memory can be redial output. Redialing : EM91850 provide Redial and One Key Redial function (1) Redial function Off-Hook normal dialing directly keying "F" key (or ON-OFF Hook once) and key-in "RD" keyboard. The numbers stored in LNB memory will be dialed out. (2) One Key Redial function Off-Hook normal dialing, if busy, press the "RD" key directly then the line will be broken about 1.2 sec with Trp redial pause time and dial out the numbers stored in LNB memory automatically. |
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