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BEU  SYSTEM  PRACTICES 

AT 

TCo  Standard 

SECTION  503-200-102 

Issue  1,  June  1977 

TELEPHONE  SETS 

902A 1  AND  2902A 1 

1. 

GENERAL 

1.01 

This section provides identification, installation, 

and  connection  information  for  the  902Al 

(Fig.  1)  and  2902Al  DESIGN  LINE*  telephone 

(Sculptura) 

sets. 

*  Trademark  AT&TCo. 

1.02 

Whenever this section is reissued, the reason 
for  reissue  will  be  listed  in  this  paragraph. 

1.03 

The  customer's  premises  must  be  properly 

wired  with  an  appropriate  connecting  block 

or jack  in  order  to  accept  the  D4BU-29  plug-ended 
mounting cord or  225A adapter furnished with each 
telephone  set. 

Warning: 

Telephone  apparatus  or 

wiring  shall  not  be  installed  in  a 

location  where  minimum  separation 
from  other  wiring  as  specified  in 

Section 

460-300-149 

c a n n o t   b e  

maintained. 

2. 

IDENTIFICATION 

2.01 

The  902Al  (rotary  dial)  and  2902Al 

(TOUCH-TONE®  dial)  equipped  telephone 

sets  are  new  DESIGN  LINE  telephone  sets  being 
made  available  to  the  customer. 

The  customer 

buys  the  housing  and  handset  from  the  telephone 
company  and  the  telephone  company  retains 
ownership  of  the  transmission  and  signaling 
components. 

2.02 

Refer  to  Table  A  for  available  codes  and 

ordering  information. 

2.03 

These  telephone  sets  are  intended  to  be 
used  as  single  line  or  two-party  desk  sets 

and  are  not  recommended  for  use  on  four- and 
eight-party  service. 

Fig.  1-2902A 1  Telephone  Set 

2.04 

Op t i o n a l   Co m p o n e n t   (o r de r e d  

separately): 

• 

819040122  (P-90D012)  Guard  Assembly. 

3. 

INSTAllATION  AND  CONNECTIONS 

3.01 

These  telephone  sets  are  furnished  from 

the  factory  fully  assembled  and  wired  for 

bridged  ringing.  The  PIA  ringer  is  shipped  from 
the  factory  with  the  bias  spring  in  the  low  bias 
position.  To  connect  the  telephone  set,  plug  the 
mounting  cord  into  a  625-type  connecting  block  or 
if  the  existing  jack  is  a  548A  or  equivalent,  use 
the  225A  adapter  furnished  with  each  set. 

3.02 

The  internal  connections  for  the  902Al  and 
2902Al  telephone  sets,  for  nonkey  system 

use,  are  shown  in  Fig. 

and  4,  respectively. 

3.03 

Connections  for  lA  KTS  do  not  require  any 
set  modifications  and  are  the  same  as  Fig. 

and  4. 

NOTICE 

Not  for  use  or  disclosure  outside  the 

Bell  System  except  under  written  agreement 

Printed  in  U.S.A. 

BSP S03-200-102-i01_1977-06-0l.jpg  Scanned  by  Frank Harrell, (Cowboy Frank) Castle Rock, Colorado  Feb  08,2012  18:18:42 

Page  1 

Содержание 902A1

Страница 1: ...p of the transmission and signaling components 2 02 Refer to Table A for available codes and ordering information 2 03 These telephone sets are intended to be used as single line or two party desk sets and are not recommended for use on four and eight party service Fig 1 2902A1 Telephone Set 2 04 Opt i o n a l Co m p o n e n t or dered separately 819040122 P 90D012 Guard Assembly 3 INSTAllATION AN...

Страница 2: ...U 93 35AH3D 2902Al 104 H4DU 104 Color Code White 58 Yellow 93 and Brown 104 BSP 503 200 102 i01_1977 06 02 jpg Scanned by Frank Harrel Cowboy Frank Castle Rock Colorado Feb 08 2012 18 18 56 TABLE A ORDERING GUIDE NET RINGER 4228M PlA 4228N TRMTR RCVR JACK IN UNIT UNIT HANDSET Tl LBl 616W HANDSET CORD JACK 616P MTG CORD JACK 623P 0 w 0 0 ...

Страница 3: ...o discontinue telephone service of these DESIGN LINE telephone sets proceed as follows Note Remove telephone company owned components that can be easily removed Refer to Fig 2 TIP PARTY RING NO IDENT PARTY IDENT GROUND R G y B A Ll G L2 K G F c A L2 L2 GROUND 1000it 2650it R R R G G G y y y B B B L1 F F A L2 L2 G G G L2 K K K Ll Ll G G G F B B c A L2 c c L2 A A 1 Unplug cords from set Note When bo...

Страница 4: ... from dial brackets Page 4 TIP PARTY RING NO IDENT PARTY IDENT GROUND R G y B A Ll G L2 K G F Ll c A L2 L2 GROUND 1000S1 26SOS1 R R R G G G y y y B B B Ll c c A L2 L2 G G G L2 K K K Ll Ll G G G F B B A Ll Ll c Ll L2 F F L2 A A 10 Reassemble two piece base housing and replace two top and six bottom screws 11 Reassemble two piece handset shell and screw on the receiver and transmitter caps 4 02 Foll...

Страница 5: ...ASSEMBLY BASE W EIGHT P TYPE RINGER ISS 1 SECTION 503 200 102 Fig 2 2902A 1 Telephone Set With Two Piece Housing Separated Page 5 BSP 503 200 102 i01_1977 06 0S jpg Scanned by Frank Harrell Cowboy Frank Castle Rock Colorado Feb 08 2012 18 20 14 ...

Страница 6: ...Y GUARD Dial BK RR T Line BL Switch Note 1 c s 623P4 R Line Cord Note 2 Jack Assy Polarity G RR Guard w c Notes 1 If wired for bridged service ring party tip party with no identification ground or lAl or 1A2 KTS 2 1f wired for tip party with identification ground BSP 503 200 102 i01_1977 06 Q6 jpg Scanned by Frank Harrell Cowboy Frank Castle Rock Colorado Feb 08 2012 18 20 29 ...

Страница 7: ...UST BREAK BEFORE THE LEAD CONTACTS BREAK WHEN USED WITH lAI OR IA2 KTS THE BK AND Y LEADS BECOf E A AND AI AND THE BR LINE SWITCH LEAD MUST BE MOVED FROM L2 TO G OF NET KlRK INSULAT D AND STORED DP DIAL PULSE ON DIAL OFF NORMAL 623P4 JACK ASSY P TYPE RINGER I NOTEII LINE SWITCH NOTE 21 S Hi IYI i t IBRI in Fig 3 902A1 Telephone Set Connections BSP 503 200 102 i01_1977 06 07 jpg Scanned by Frank Ha...

Страница 8: ...ND RING LINE SWITCH CONTACTS llST BREAK BEFORE THE A LEAD CONTACTS BREAK liEN USED WITH IA I OR IAZ KTS THE BK AND V lf AOS BECOME A AND 1 AND THE BR LINE SWITCH LEAD 14JST BE MOVED FROM L2 TO G OF NET ORK INSULATED AND STORED PI TYPE LINE NETWORK RINGER SWITCH NOTE I NOTE 2 BI G soon BI Bl BI Fig 4 2902A1 Telephone Set Connections BSP 503 200 102 i01_1977 06 08 jpg Scanned by Frank Harrell Cowboy...

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