S 1 A AND S 1 AM TONE RINGERS

Transcription

1 BELL SYSTEM PRACTCES AT & TCo Standard SECTON ssue 4, December 1977 S 1 A AND S 1 AM TONE RNGERS 1. GENERAL 1.01 This section contains identification, installation, connections, and maintenance information on the tsla (MD) and SlAM (modular) tone ringers This section is reissued to: Add information on SlAM (modular) tone ringer Show SlA tone ringer MD 2. DENTFCATON 2.01 Purpose: The SlA and SlAM tone ringers (Fig. 1 and 2) are extension ringers for people with impaired hearing Ordering Guide: tringer, SlAM *Available in vory (50) and Gold (63) only tassociated Equipment or Apparatus (ordered separately): Cord, Mounting, D4BU29 Plate, Mounting, 1049A Adapter, 285A Design Features: To be mounted on a vertical wall surface Volume control switch provides LOWOFFLOUD positions Alerting signal consists of two equal amplitude frequency components at approximately 750 and 1500 Hz Higher frequencies are attenuated by a side branch resonator to reduce annoyance to persons with normal hearing tslam modular mounting cord Application: 3. ndividual lines 2party flat rate PBX stations. Note: When tip party identification is required, it should be obtained through the ringer associated with each telephone set. Refer to particular telephone set used for connections. NSTALLATON 3.01 Select a central location about 5 feet above the floor so that the customer can hear the ringer in LOW volume position in largest area of residence nstall both ringers with volume control switch down. Allow space on top of ringer to remove cover tthe SlAM (modular) tone ringer (Fig. 2) requires a 285A adapter and a 1049A mounting plate which must be ordered separately. nstall the ringer as follows: (a) Using hardware provided with 285A adapter, attach adapter to back side of ringer. (b) Mount the 1049A mounting plate on wall surface using appropriate hardware for the particular wall material. (c) Place ringer over studs on mounting plate and move downward to snap into detented slots. NOTCE Not for use or disclosure outside the Bell System except under written agreement Printed in U.S.A. Page 1 BSP S i l.jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock. Colorado Feb 07, :01:56

2 SECTON N. J Fig.!.SAM Tone Ringe.. (d) Connect the D4BU mounting cord between the connecting block and ringer jack The SlA (MD) ringer is designed to be mounted on a wall surface with two fasteners. Select length of fastener to provide secure mounting for the particular wall material nside wire may enter tone ringer from back, bottom, or either side (SlA only) The ringer voltage margin test should be made at time of installation and on maintenance visits where trouble is indicated in the ringer. 4. CONNECTONS 3.05 To remove the louvered cover from either tone ringer, release the two captive screws which fasten cover to the base (Fig. 3) Ringer Voltage Margin Test: Note: The ringer is furnished from the factory wired in the highbias condition with Page 2., BSP i jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Feb 07, :02:14

3 SS 4, SECTON SAM RNGER 285A AOAPTEit Fig. 2.S1AM Tone Ringer With Adopter and Mounting Plate. the WHTE lead connected between HBl terminal and R4 resistor terminal (Fig. 5). (a) Move line wire from terminal 4 to terminal 5 of the ringer terminal board (Fig. 4 and 5). (b) Obtain ringing test according to local instructions. Check ringer in LOW and LOUD volume positions. (c) f ringer operates properly, move line wire from terminal 5 back to terminal 4 and replace cover. (d) f in step (b) the ringer does not operate properly, disconnect WHTE bias lead at HBl terminal of the ringer terminal board, insulate and store for low bias condition. (e) Repeat steps (a) and (b). (f) f ringer does not operate properly, replace tone ringer and repeat test Voltage Margin for Multiple SlA or slam Ringers: When more than one ringer is connected to a line, observe the following: Note: n no case should the line wire be left on terminal 5 after the test is completed. (a) When it is necessary to connect one SlA or SlAM ringer in the lowbias condition, all Page 3 BSP i jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Feb 07, :02:34

4 SECTON HORN RESONATOR Fig. 3 S1AM Tone Ringer, Cover Removed. other ringers on the same line must be connected for lowbias even if they pass the highbias test. (b) f all ringers meet the highbias test, connect for highbias condition. 5. MANTENANCE 5.01 f ringer fails to operate properly, check the following:.table A. LNE (Sl A) AND JACK (SlAM) TONE RNGER CONNECTONS TERMNAL BOARD N RNGER (a) See that all connections are tight and correct. (b) Make ringer voltage margin test per WRE OR LEAD (See Note) COLOR NO V OR BRDG RNG PARTY TP PARTY (c) Verify that ringing bridge limitations are not exceeded. nside Wire or 652C4 Jack Ring R Tip G GRD y Spare BK * * * (d) f tone ringer still fails to operate properly, replace ringer. * nsulated and stored. Note: For connecting other classes of service, see section for the particular telephone set used. Page 4 SSP S i jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Feb 07, :02:49

5 "''" :.. NSDE :iilf RE K"i llil jj 625 TYPE rm 048U mm 652C4 J: TERMNAL 1 TRANSFORMER 1 (R),,f;, B OARD.., 5. :; 1:...:. J,,, mt NETWORK n:' VOLUME w SOUNDER f!.,',.,., L 1t U N T R6 1 J# i $..r;. r( 1,::. Cl 2.0 CR rr. 11 1< :;: :; '' : : 1 a, k ''' :::) li,.,.: (Y) t:::ll>..,j! "" '++t.f <rb' ( NO T E,(; "1 ) '}. 'B, ) 1"1, C6 tt ::: wig;,;.r. L ouo l ll c t0 (Y) : (G) CRl n. Rl,.,. mt,, tt ;K $ f& i <w::,, till ";,; B) [,\&.!!< oc.: ) +t 5.0 OTE +/isif \ w () NOTES'. VALUES OF Rl AND R4 RESSTORS ARE FACTORY SELECTED. 2. FOR L B AS CONDTON DSCONNECT, NSULATE AND STORE THS () LEAD AT TERMNAL HB. l. CONNECTONS SHN ARE FOR NDVDUAL OR BRDGED RNGNG. REFER TO TABLE A FOR ALL OTHER C L ASSES OF SERVCE. 4. MUST BE ORDERED SEPARATELY. * NSULAT EO AND STORED. 'i\.'1 ", "' ;r:; :K L 4 0 8)! 7 '" " ' C5 ( (BLY) * llo.,("1 < j1 r..r,... r.. :; T2 tj (R) Tl " ", (0) CR 2 :;;:0:: C23.2. "1:,. : '' iii "' "'?l... 5 z Fig. 4.SlAM Tone Ringer, Connections. g BSP i S.jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Feb 07, :03:09

6 NSDE WRE (NOTE 31 f" TERMNAL B<lARO NETWORK VOLUME CONTROL SWTCH SOUNDER UNT ll!s 0 z ;, RLN.G tf\) 4 :; Cl z.o " CR BLl LOW ZK OFF [[ ZK LOUD (BR) (Sl TR : 'F' z,t (Rl 36>011 Tl (0) (Gl CRZ CR3 + C3 z.z Rl (NOTE ) BE C6 o.oos r' (Yl ' TP G ) GliiD (Yl SPARE (BK NOTES: 3 * (NOTE2:\ HB '\ BK (Wl (Wl. VALUES OF Rl AND R4 RESSTORS ARE FACTORY SELECTED. 2. FOR LOWBAS CONDTON DSCONNECT, N SULATE AND STORE THS (W) LEAD AT TERMNAL HB. 3. CONNECTONS SHOWN ARE FOR NDVDUAL OR BRDGED RNGNG. REFER TO TABLE A FOR ALL OTHER CLASSES OF SERVCE. (W) 01 16L > ( 0 RZ C4 R K + cz BR Y (NOTE > * 5.0' ) {BRW) 8 (BLY) cs * BLW) 33K,, BL * NSULATED AND STORED Fig. 5SlA (MD) Tone Ringer, Connections BSP i jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Feb 07, :03:24