Bell 502-533-403 Service Manual

BELLSYSTEM PRACTICES SECTION 502-533-403
AT&TCo Standard Issue 4, June 1977

SERVICE

2511F, 2511H, AND 2511HM TELEPHONE SETS

1. GENERAL TABLE A

1.01 Reissued to: POLARITY GUARD CONNECTIONS

• Show 2511F and H telephone sets MD, Fig. [819040528 (P-90D052) GUARD ASSEMBLY[

1

REMOVEFROM CONNECTTO

• Add D16J mounting cord, Fig. 2 LEAD COLOR

• Delete 2511FM telephone set information
(never manufactured). Dial BK RR T

Line

Switch

Polarity G RR

Guard W C

Note: For use when specified by local instructions
for end-to-end signaling installations.

G-W C S

W C S

NET. NET.

POLARITY

GUARD

NOTICE

Not for use or disclosure outside the

Bell System except under written agreement

Printed in

U.S.A. Page 1

SECTION 502-533-403

DESIG ( NOTE2 } RI NGER (NOTE 6) HANDSET

PLUG (NOTES 3,

46

EXCN I (BL) ii!_ii K !ii_!iiii!.

E.0 EXCNK YHTYPEI'ETWOKiiiG3TYPE

I 4, AND 5 )

f Q

(S) STRAP A l}iiiil

L INEI _ (NOTE 5 ) (_

I (w)_

8 L INE SWITCH !i!i!iiiiil

g (BK) _! (W) (_)

d e _ (R)_)

SPI !ii!!i!i!i

CKT ............

......... iiiiii! ii

i!!_i!i!iii

iiiii

...........

!ii!.:..:%

ii%i ..... i!i!ili!i

3. TWO-LINE PICKUP CONNECTIONS PROVIDE FOR RINGING ON

I LINE I. FOR RINGING ON LINE 2, MOVE(S) STRAP LEADFROM

SIG 5. FACTORYVIREO FOR BRIDGED RINGING SERVICE. CONNECTIONS
CKT FOR HIB RINGER SHOWN. IF HIA RINGER IS USED, WIRE

I

2, REMOVE(S) STRAP FROMA OF NETWORKTO I OF T.S.

NOTES: ::::::::::: 6. LEADS SHOWNCONNECTEDAT TERMINALS S AND T ON 425K

I. NTG CORDFOR 2511H TELEPHONESET SHOWN. NETWORKARE CONNECTEDAT TERMINALS LI AND G

251 IF TELEPHONESET IS IDENTICAL EXCEPT RESPECTIVELY IN SETS EQUIPPED WITH 425G NETWORK.
EQUIPPED WITH D20J SPADE-TI PPED NOUNTING CORD. 7. LINE SWITCH SEQUENCE, HANDSET REMOVED:

2. TWO-LINE PICKUP CONNECTIONSPROVIDE FOR EXCLUSION bC-MAKES
ON LINE I. FOR EXCLUSION ON LINE 2, CONNECT (BK) de-MAKES
(Y)p AND (S) EXCLUSION SWITCH LEADS TO TERMINALS 5p Ob-BREAKS

6, AND 7 RESPECTIVELY. fCJ-BREAKS

14 iiiiiiiiii(BL) 4. TO SILENCE RINGER FOR ALL CLASSES OF SERVICE

iiii::iiiiii (S-R) TO A OF NETWORK

Fig. 1--2511F (MD) and H (MD) Telephone Sets, Connections (Factory Wired)

Page 2

TERM.I TO TERM.5 AND(BK)RINGERLEADFROMTERM.:>TOTERM.6.

REFER TO APPROPRIATE SECTION IN DIVISION 501.

AS FOLLOWS:

(BK) TO 2 OF TERN. STRIP