49018-0697 <90-00089>
P
AGE
13
NOTES
Page 1: ...ore complete information on electrostatic discharge safety precautions refer to BellcoreTM Technical Reference TR NWT 000870 Copyright 1997 by Dantel Inc Dantel is a registered trademark of Dantel Inc...
Page 2: ...s Initiation of loopback testing Utilization of and BCD data or A and C BCD data to provide a busy control output and clear output The 49018 subassembly also provides a toll restriction function and a...
Page 3: ...sy control clear and 0 and 1 digits The outputs are applied to the 44022 Station Interface Module or the 44023 PABX Trunk Interface Module of the 440 CMS or TMS Miniature 10 digit switches on the 4901...
Page 4: ...IGIT COUNTER FROM BCD BUSS Q1 RING GENERATOR START NOTE SYMBOLS ARE FUNCTIONAL LOGIC ONLY DELAY ENABLE DIGIT SELECT 1 2 3 BUSY RESET PULSE STATION 2 ADDRESS COMPAR ATOR STATION 2 DRIVER INTER DIGIT AN...
Page 5: ...it count selected by the digit strap option the address in the address buffer latch is compared to the preset address code selected by the miniature 10 digit switches If the code matches the matching...
Page 6: ...he is used to set the busy latch and the will clear the busy latch This function can be set to reverse the busy latch operation The busy latch when set provides a ground at P2 7 and applies a reset pu...
Page 7: ...is output is switched to ground through the open collector of Q1 The ground enables the ring generator and the ring ring back interrupt functions The 49018 subassembly is mounted to a 44020 DTMF Decod...
Page 8: ...OK BUSY TONE RING BACK TONE ALERT TONE RING INTERRUPT RING GEN SUPPLY 31 RING GEN SUPPLY 23 43 21 19 RING GEN ENABLE 12 11 10 9 8 7 5 6 4 3 2 1 16 15 13 22 16 55 3 22 39 26 24 35 23 21 25 31 RING STAR...
Page 9: ...s to the supervisory decoder and are normally strapped to set and clear respectively the busy latch circuit and station one and two address latches when a 12 button DTMF phone pad is used The A and C...
Page 10: ...usy with A Reset with C STRAP SETTING OR SWITCH Reset IN Reset OUT Digit 1 Digit 2 Digit 3 S1 S2 S3 S4 S5 S6 SET CLR SET CLR SET A CLR C Installation Verify that the option straps are installed as des...
Page 11: ...ps are set for system operation reinstall 44020 in shelf and apply power RESULTS Power up Clear resets all 49018 subassembly circuits CKT 1 LED on front panel comes ON Station 1 44022 or 44023 functio...
Page 12: ...18 0 mA 0 03 BTU Hr 0 62 BTU Hr CMOS 100K ohms to 10 VDC Logic 1 0 0 5VDC ground Logic 0 10 0 5VDC Decoded state is Logic 1 Open Drain 200 mA 21 to 56VDC Logic 1 0 0 5VDC ground Logic 0 10 0 5VDC Dec...
Page 13: ...49018 0697 90 00089 PAGE 13 NOTES...
Page 14: ...instrument signed by a duly authorized officer of the Seller and accepted by the Buyer Warranty and remedies on products not manufactured by the Seller are in accordance with warranty of the respecti...
