Dial Label Types and
Instructions for use

Dial labels - white & grey labels (EI Stations A3202)
Dial labels - white & red labels (EI Stations A3913)
Dial labels - maintenance and renewal (EI Stations A5102)
Non-GPO dial labels
GPO dial labels to download

A 3202
Issue 7, 26.1.66


All dials and dummy dials associated with telephone switchboards and subscribers telephones should be fitted with dial-centre labels. It is essential that the labels fitted are suitable for the emergency arrangements at the installation concerned.  The maintenance procedure for dial-centre labels is contained in Telephones, Stations, A 5102.

Types of labels
Click here to see a picture of the different dial-centre labels and refer to Table 1 for details their particular applications. The various types of labels are:-
(a) Labels No. 160 which are blank paper disks.

(b) Labels No. 160... which are similar to Labels No. 160 except that they contain printed instructions in addition to the space provided for the exchange name, or code and number etc. Label No. 160 followed by a suffix letter indicates the type of label to be used for particular installations as indicated in Table 1.

(c) Labels No. 386... which are paper labels introduced to replace certain Labels No. 160... Although specially prepared for the Dial, Automatic, No. 21... and Dial, Automatic, Dummy, No. 6 and No. 7, Label No. 386... may be fitted on earlier types of dials and dummy dials. Label No. 386 followed by a suffix letter indicates the type of label to be used for particular installations as indicated in Table 1.

(d) Labels No. 442... which are similar to Labels No. 386...except that they are adhesive-backed temporary dial-centre labels which can be forwarded by post to subscribers. They are for use when a change of label only is required and so avoid a visit by an engineering officer solely for this purpose. They will be fixed to the top surface of the label protector and replaced with permanent labels at a suitable opportunity. Their main field of use is for exchange conversions, Area correction transfers and change of emergency code. When forwarded by post for subscribers to fix, they will be associated with an illustrated folder which explains why they are required and how to fit them. The labels will be requisitioned by the Traffic or Sales Division.  Labels which are to be posted to the subscriber should be printed locally with the exchange number by the Traffic or Clerical Division, according to local arrangements, who will be responsible for dispatching them with the folders to the subscribers (see Tp. S.I. El VI). Labels No. 442... can be consecutively numbered by the printer. This might be of benefit where large blocks of numbers are involved. It should be borne in mind, however, that for any exchange number only one label will be printed and therefore, to cater for any additional requirements, labels for local printing of the number will still be required.

Labels are not now provided with a nick, and care should be taken to fit the label with the printing horizontal. It will be necessary to punch through the label with the retaining spring when it is used to retain the label in position.

Labels (most of which are specially printed) should be requisitioned as early as possible, allowing at least three months for delivery. Requisitions should be submitted to the Supplies Dept. (MP3/1), Mount Pleasant, London, E.C.1, or, for Scotland and N. Ireland Regions and Lancaster, Middlesbrough and Newcastle-upon-Tyne Areas, to the Supplies Dept. (E3/2), Russell Rd., Edinburgh, 12 on forms A 1097, accompanied by a printing schedule on form A 1098 which should give the particulars of the printing required. Care should be taken to see that the schedule states the precise printing required. The economic quantities for each sort of label are multiples of 100 with a minimum of 100 and this point should be considered when estimating quantities to be requisitioned. Separate requisitions should be submitted for each type of label, e.g. 160BB, 160R, 386A, 386B.

Requests for labels which are departures from the standard types shown in Table 1 should be forwarded to the Traffic Divn. for approval. The Traffic Divn. will be responsible for ordering non-standard labels which will be requisitioned as 'Labels No. 160, Special' and have red and black characters on a white background.

All labels will be supplied with the appropriate information printed as shown in the upper part of the dial label picture, the lower part gives some examples of the additional printing that may be necessary. The printing of the exchange name, or code and extension (Extn), if required, must be called for on the requisition. The printing of 'Extn' may be requested on all labels with the exception of Labels Nos. 160, 160K and 386F. Manuscript entries should not be made on dial-centre labels. The only printing to be done locally is the subscriber's exchange number, P.B.X. extension number, station number or Private circuit number which should be done with a Machine, Numbering, No. 5 or No. 31. Labels used at P.B.X. extensions should show the first number only of the P.B.X. group. For large P.B.X. installations where the quantity of labels required exceeds, say, 100, printing of the exchange number on each label, in addition to the exchange name or code, should be requested when the requisitions are forwarded. Labels No. 160 for main exchange switchboard dials should be left blank; spare labels (plain side uppermost) may be fitted.

                                TABLE 1 - types of labels

					              0	         999
	                  Magneto   C.B.S.  C.B.   emergency  emergency
	    	                                              (Note 1)

D.E.L. (Ord)	          160C	    386C    386	   386B	      386D

D.E.L. (subs C.C.B.s)
(Note 2)	          160	    160	    160	   160	      160

Subscribers' extension
plans (Note 3)	          160C	    386C    386C   386B	      386D

  P.M.B.X. extensions
Without dial	          160C	    386C    386C   386C	      386C
   "      "  (n/s)	  160C	    386C    386C
With dial				           386B	      386D
   "      "  (n/s)		                   386B	      386D
C.C.B.	                  160C	    386C    386C   386C	      386C

  P.A.B.X. extensions
Without direct access     	    386B    386B   386B	      386B
With direct access		    386B    386B   386B	      160BB
With night service		    386B    386B   386B	      160BB
Manual		                    386C    386C   386C       386C
With C.C.B.		            386B    386B   386B       386B
P.A.B.X. 5					              386G

  H.E.S. extensions
Full facilities			            386E   386B	      386D
Restricted facilities			    160N   160N	      160N
Exchange service barred			    160R   160R	      160R
External extension on 
H.E.S. 1 and H.E.S. 2                       386C   160T	      386D
H.E.S. 3 external extension		    386E   386B	      386D

Private circuit	         160K	   160K	    160K   160K	      160K

Call office plans and 
telephone switchboards   160	   160	    160	   160	      160

P.A.X.s	                 386F      386F	    386F   386F	      386F

NOTE 1:- When the operator code is not yet '100' Label No 386A will replace Label No. 386D

NOTE 2:- When emergency instruction cards are not provided, fit Label 
         No 386... showing the appropriate emergency code

NOTE 3:- When fitted as P.M.B.X. or P.A.B.X. extension see appropriate section

NOTE 4:- When adhesive-backed labels are required Labels Nos. 442A, 442C 
         and 442D replace Labels Nos. 386A, 386C and 386D respectively

On Labels No. 160 for call offices and P.B.X. switchboards, the exchange name should be printed in capitals throughout and will generally be in a horizontal line or fines. If however the exchange name has only one word and this contains more than 13 letters, the printing should be arranged in the form of an arc, a hyphen being regarded as one letter. The hyphens in a hyphenated name should be shown if the exchange name can be printed in one line, but if the words of a name occupy more than one line, omit the hyphen. Typical examples of exchange name, or, code and number are shown in the lower part of the dial label picture with the exception of Labels No. 160 the exchange name should be printed as follows:-

(a) Director areas. The first three letters should be capitals and the remainder in lower case, e.g. HEAdquarters, or S.T.D. code and exchange code in the following manner 021-432.

(b) Non-director, U.A.X. and manual-exchange areas. If the exchange name does not form part of the dialling code, only the first letter should be a capital, e.g. Dunstable.

For the identification of certain official telephones the exchange number is followed by the code 'G.P.O.'; this code should be shown on the dial-centre labels of all such telephones.

Numbering machines
Printing of the exchange and extension numbers on Labels No. 160... and Labels No. 386... should be done locally using a Machine, Numbering, No. 5 Shown to the right). Printing of the exchange number on Labels No. 160 for use at call offices should be done using a Machine, Numbering, No. 31.
Care should be taken to print the numbers horizontally, using the template base of the machine as a guide. Use only the printing ink supplied for use with the numbering machines. The ink pad should be replenished with a few drops from the tube and spread evenly by means of the setting stick. Further supplies of ink in small tubes can be obtained on requisition from the Supplies Dept. When resetting the printing wheels, take care to avoid damage, by using only the small setting stick supplied with each machine. Clean the numbers when necessary to ensure that the characters are sharply defined. For this purpose a suitable brush may be purchased locally.

Temporary labels for conversions and area correction transfers
During conversion from a manual to an automatic system, or transfer from one exchange to another, the exchange number shown on the subscriber's telephone before transfer should be that relative to the old exchange; immediately after transfer, the instrument should display the new number.

For conversions from a manual to an automatic system, one of the following methods should be adopted to ensure that the correct number and emergency code is shown at all times:-

(a) If there is a change of number before the instrument is changed.

(i) At the number change a Label No. 442C is posted to the subscriber.
(ii) At the instrument change a permanent label is fitted and covered with the Label No. 442C.
(iii) At conversion the subscriber removes the Label No. 442C to expose the permanent label with the correct emergency code.

(b) If there is a change of number after the instrument change but before conversion. If the new number is known at the time of the instrument change apply (a), (ii) and (iii). If, exceptionally, the new number is not known at the time of the instrument change.-

(i) Refit the old label in the new telephone.
(ii) At the number change a Label No. 442C is posted to the subscriber.
(iii) Between the number change and conversion a visit by an engineering officer will be necessary to fit a new permanent label while retaining the Label No. 442C.
(iv) At conversion the subscriber removes the Label No. 442C.

(c) If there is a change of number or emergency code on conversion.

(i) If the new number is known at the time of the instrument change apply (a), (ii) and (iii). (ii) If not, at conversion, post Label No 442A or No 442D with the final letter of advice to the subscriber.
(iii) A permanent label will be fitted at the next visit by an engineering officer.

For transfers from one automatic exchange to another where a change of name, code or number is involved, Labels No 442... may be posted to the subscribers or, alternatively, if a visit is to be made by an engineering officer, a permanent label bearing the new number should be fitted and covered with an equivalent adhesive label bearing the number relative to the old exchange.

Transfers from one C.B. exchange to another, where a change of exchange name and number is required, should follow a similar procedure to that specified above.

Normally, extension instruments with dials or dummy dials should also be fitted with the temporary labels as described above, but the requirements of large P.B.X.s should be considered on their merits in consultation with the responsible Traffic officer. It will generally be possible to arrange for the P.B.X. operator (following the receipt of notification from the Traffic officer) to request, during the course of normal operating, the extension user to remove the temporary label. Alternatively the subscriber may consent to display a notice requesting the removal of all temporary labels at a given hour.

Co-operation with the responsible Traffic officer is essential whenever temporary labels are to be fitted, so that the necessary arrangements may be made to advise the subscribers of the time and date on which these labels should be removed.

Stocks of labels
Installation Controls and Maintenance Controls should stock dial-centre labels for each exchange area controlled. This arrangement will usually allow new installations and additional stations to be equipped with the correct dial-centre label when the fitting work is being done or a dial- centre label has to be changed.

At some call-office installations, owing to the repeated mutilation and defacement of dial-centre labels, it may be advisable to store up to six additional labels. These spare labels should be placed in an envelope, together with six securing rings and transparent protectors (Dial, Automatic, Parts Nos. 1/DSP/497 and I/DPR/4) and stored in the coin-box casing for replacement purposes.

A 3913
Issue 4, 3.1.52

Special Labelling Arrangements for Automatic Areas where the emergency call 999 facility is available

Scope of instruction
This Instruction describes the types of dial-centre labels to be used in automatic areas, in which the '999' facility (with priority answering) is available or is to be introduced, in accordance with Automatic, A 1902, and should, be read in conjunction with A 3202.

When this facility is to be introduced, a new dial-centre label ("Label No. 160") should be fitted at every station equipped with a dial, except public call-offices equipped with a coin-box and dial. For other cases where existing labels are retained. The type of label to be fitted at any station can be ascertained by reference to loose-leaf diagrams N 1951 to N 1990 (for public call-offices, see N 1950). For the maintenance procedure for labels, see A 5102.

Labels required
Label Nos. 160GA, 160GB, 160BA, 160BB and 160SA have been designed for use in these exchange areas. The precise details of these labels and their uses are shown in Table 1, and each label is illustrated in the dial label picture.

                        TABLE 1

No      Dial on which to be used        Installations concerned

                                        For use where the station directly 
                                        connected to the public exchange

16OGA   Dial Automatic, No 10...        Direct exchange lines
                                        P.B.X. switchboards
                                        Extn plans 1, 1A, 1B, 3, 4, 8 & 11
                                        Extn plans 5, 5A, 7, 7A & 8A, main
        Dial Automatic No 10 or 11...   Call office plans 1A, 2A, 2C & 2G
                                        Call office plans 2C, 5E and 5F
                                        (Subscribers stations with prepayment 
                                        coin boxes where emergency notices 
                                        are not displayed (except extension 
                                        plans 5, 5A, 7, 7A and 8A extension 
                                        telephones, see Label No 160 GB)

                                        For use when the extension station is 
                                        switched through to the public 
160GB  Dial Automatic No 10...          P.M.B.X. extensions
                                        Extension plans 9 and 10
                                        House exchange systems - external 
                                        extensions, with or without
                                        recognised night-service numbers
                                        House exchange systems - subsidiary 
                                        to P.B.X. - stations with full 
       Dial Automatic No 10 or 11...    Extension plans 5, 6A, 7, 7A & 8A 
                                        extension telephones with or without 
                                        prepayment coin-boxes

160BA  Dial Automatic No 10...          P.A.B.X. extensions with direct 
                                        access to the public exchange

16OBB  Dial Automatic No 10...          Switchboards AT 1837
                                        P.A.B.X. extensions without direct 
                                        access but with occasional direct 
                                        calling facilities to the public 

160SA  Dial Automatic No 10...          House exchange systems (with or 
                                        without external extensions) at 1st 
                                        or 2nd choice main stations and 
                                        stations with full facilities

Printing the instruction
Emergency calls for Fire, Police, Ambulance, Dial 999, etc will be printed in red on the upper portion of all Labels No. 160... for use in areas where the 'emergency call' facility is available. On "Labels No. 160BA" the digit to be dialled to gain direct access to the public exchange will also be printed in red. The exchange name is to be printed in capitals of uniform size on all labels and additional matter, such as the words " Extn", " Station", " Night Service", etc is to be printed on certain labels in black.

Subscribers conversions and area correction transfers
For subscribers' circuits being converted in, or transferred to, an automatic area where the emergency call facility is catered for a "Label No. 188D" has been designed to cover the lower portion of the dial-centre label in these areas during the transfer period.

All labels should be requisitioned from the Stores Dept, Mount Pleasant, London, E.C.1, on form P 1156G, and particulars of printing required should be given on a schedule accompanying each requisition. Care should be taken to see that the schedule states the precise printing required.

Existing dial-centre labels to be retained
The existing labels should be retained as follows :-

(a) "Labels No. 160" (exchange name and number only printed) on call-office plan no 5A.

(b) "Labels No. 160" on call-office plan nos. 2G, 5E and 5F (telephones in kiosks or cabinets).

(c) "Labels No. 160" on stations without coin boxes, associated with subscribers' plan no stations with coin-boxes.

(d) "Labels No. 160B" and "Labels Nos. 160D or DA", on P.B.X. extensions which are equipped with post-payment coin-boxes and where the associated telephones are fitted with "Dials, Automatic, No. 10FA" or "Dials, Automatic, Dummy, No. 3 " respectively.

(e) "Labels Nos. 160N, 160P or 160R" on house exchange stations with restricted facilities; these stations are not equipped with dials.

Stocks of labels
Installation Offices and Advice Note Control Centres should stock for each automatic exchange area with '999' facility (see Table 2) four types of dial-centre labels: one for D.E.L.s with dials, two for extensions with dials and one for extensions without dials. This arrangement will permit, in the majority of cases, of new installations and additional, stations being equipped with the correct dial-centre labels when the fitting work is being carried out.

For large P.B.X. installations where the quantity of "Labels No. 160..." required exceeds say 50, or for house exchange systems, opportunity should be taken to have the exchange number - in addition to the exchange name, etc - printed on each label when requisitions are forwarded upon receipt of the Advice Note.

A stock of "Label No. 160..." with the exchange name, number and "EXTN" printed thereon, may also be held for new work and maintenance where any large P.B.X. installation exists in the exchange area controlled.

The Rate Book description of each label, which should be stocked for each exchange area controlled, together with details of printing are shown in Table 2.

			       TABLE 2

Type of exchange     Labels to be	No of	 Detail of printing
area                 stocked	        types

Automatic (director  160GA	         2	 (i)  Exchange name......
or non director)                                 (ii) Exchange name & extn
with 999 facility    160GB		 1            Exchange name and extn

        	     160DA or            1            Exchange name and extn
                     160D                             See A3202 Fig. 4

"Label No 160DA" supersedes "Label No 160D on reprint. i.e. when the stock of the latter type for any exchange 
area is exhausted and a new supply has to be printed for that area.

A 5102
Issue 5, 12.9.39

Maintenance Procedure

It is important that labels fitted on subscribers' telephones be maintained in a satisfactory condition and this Instruction indicates the procedure to be adopted for this purpose.

Inspection of labels
All telephones should have been labelled when fitted, in accordance with the Instructions and loose-leaf diagrams which deal with the initial labelling of subscribers, and call-office telephones, viz,

A 3114 (Enlarged number rings, "Labels No. 197....")
A 3202 (Dial-centre and telephone labels)
A 3913 (Dial-centre labels for areas with '999' facility)
G 3103 ("Labels Nos. 219 and 220" for autodials) and loose-leaf Dgms. N 1950 to 1990.

Officers employed on the maintenance of subscribers or call office telephones should-whenever visiting such installations - inspect the labels and transparent protectors and take steps to replace any which may be found to be incorrect, defaced or dirty.

Labels to be carried
To enable replacement of labels on subscribers telephones and coin-box installations to be effected immediately necessity is observed, spares of each type of Labels No. 160 - with the exception of those specified below used in the maintenance office areas, printed with the name of the exchange or exchanges concerned, should be carried by each officer in an "Envelope No. SS 293". Details of the appropriate labels are given in the Instructions and loose-leaf diagrams referred to in the first paragraph. A numbering machine (see TOOLS & TRANSPORT, Hand Tools, A 0060) should be carried by each maintenance officer and should be used to insert the exchange-line numbers and extension numbers on "Labels No. 160 ..." (see A 3202).

Spare labels to be held at the installation
At installations where "Labels No. 160" (which should have the exchange name and number printed by the Stores Dept.) are fitted, a spare label is provided initially (see A 3202 and A 3913). When replacement of spares becomes necessary, two additional labels should be ordered and fitted in the dial-label holder.

In areas where labels are liable to frequent mutilation or defacement, six additional "Labels No. 160," with the exchange name and number printed on them, and six "Dials, Automatic, Parts Nos. 2/SSP/487 and 1/SPR/1" (securing ring and transparent protector, respectively) should be placed in an envelope and kept within the coin-collecting box easing, to be used as replacements become necessary. When spares of any item have been reduced to two, the maintenance officer concerned should arrange for the stocks to be replenished.

House Exchange installations
The necessary markings, including the exchange name and number are printed on both sides of " Labels Nos. 222 and 222A " so that a label may be reversed if and when one face becomes dirty or disfigured, or when repeated change of markings by a subscriber renders it unsightly. When for any reason, it becomes necessary to replace a "Label Nos. 222 or 222A" a new one should be requisitioned from the Stores Dept; the requisition should indicate the exchange name and number required to be printed on the label (see A3202). Labels may be removed from telephones - as described in Q 5001.

"Labels Nos. 219 and 220" are used for "Autodials Nos. 1 and 2", respectively. Two labels are required on each autodial to indicate the position of the various numbers. These labels are supplied initially by the D.M. with the name and telephone number, of each subscriber to be set on the autodial, already inscribed. When for any reason it becomes necessary to replace these labels, the D.M. should be requested to prepare and supply new ones, details of the required inscription being forwarded with the request (see G 3103).

The Rate book descriptions of the machines and parts referred to above are:-

Machine, Numbering, No. 5, Complete

which comprises:-
Machine, Numbering, No 5
Case for Machine, Numbering, No 5
Setting stick for Machine, Numbering, No 5
Bottle of ink for Machine, Numbering, No 5
Felt, Inking Pad, NM 11
Holder for Inking Pad, NM 13

Label No. 160 variants

Taken from the 1957 Rate Book.
Paper disk. Dials, Auto. (later Mark Nos. commencing at 236) and Dials, Auto., Dummy, Nos. 3 and 4. Instruction and exch. number labels used on teles. for purposes indicated in detail of each item.  Exch. name, number, "difficulty" dialling figure, etc. as required to be stated on reqn. (See E.l.s TELES. Stns. A 3202 and A 3918).  For covers for these labels see Dials, Auto.; Part No. 1/SPR/1.

For all public call offices. Also for coin-box subscribers plan no. stns. without coin-box, and D.E.L. subscribers with coin-box, (except P.B.X. extns. with coin-box), where emergency 999 not provided.

Overall dimensions - 1 37/64" diameter.

Label, No. 160 Use
A For D.E.L. and Extns. in Director areas. Early use on Dials, No. 10LA (1932) - not in 1957 Rate Book.
B For non-director areas and P.A.B.X. extns. with dials where the "ENG" service is not in operation
BA For P.A.B.X. extns. with direct access to public auto. exch. with emergency 999
BB For P.A.B.X. extns. without direct access but with through-dialling or night service facilities to public automatic exchanges with emergency 999
C For Magneto areas
D For Auto., C.B., and C.B.S. areas. Superseded by No. 160DA
CA For Auto., C.B., and C.B.S. areas. Supersedes No. 160D
E For official P.A.B.X. extns. in director areas, except HEA
G For director areas where "ENG" service is in operation and emergency 999 not provided
GA For direct exch. lines, P.B.X. switchboards and certain plan nos., main and extn. stns., and subscribers' D.E.L. and plan no. stns., with prepayment coin box on public auto. exchs. with emergency 999
GB For P.M.B.X. extns., H.E.S. (subsidiary to P.B.X.) stns. with full facilities, H.E.S. ext!. extns. with or without recognized night service number, and certain plan no. extns. to public auto. exchs. witl!. emergency 999
J For exch. or extn. circuits in non-dir. areas where "ENG" service is in operation
K For P.W.s, all areas
LA For official P.A.B.X. extns., HEA
M For H.E.S. internal. extn. stations with full facilities, manual areas
N For H.E.S. internal extn. stations with restricted facilities (exch. call~ allowed at the discretion of the main stn.), all areas
P For H.E.S. external extn. stns. with or without night service (manual areas), and without night service (auto. areas)
R For H.E.S. internal. extn. stns. not for exch. calls, all areas
S For H.E.S. internal extn. stns. with full facilities in automatic areas where emergency 999 not provided
SA For H.E.S. 1st or 2nd choice main stns. and stns. with full facilities where emergency 999 is provided
T For H.E.S. external extn. stns. with night service, auto. areas
Y For station telephones of P.A.X.s
Z For manual positions in automatic exchanges in London director area
ZA For trunk exchange switchboard positions in London director area only
ZB For manual exchange switchboard positions in London telephone area only
ZC For extension circuits of Port of London Authority (ROYal2000), Head Office (Trinity House) P.A.B.X. (92) with emergency 999
ZD For London and St. Katherine's Dock Office P.A.B.X. (93) with emergency 999
ZE For India and Millwall Dock Office P.A.B.X. (94) with emergency 999
ZF For Surrey Commercial Dock Office P.A.B.X. (96) with emergency 999
ZG For Victoria and Albert Dock Office P.A.B.X. (95). For West Ham Fire Brigade area with emergency 999
ZH For Victoria and Albert Dock Office P.A.B.X. (95). For East Ham Fire Brigade Area with emergency 999

BACK Home page BT/GPO Telephones Search the Site Glossary of Telecom Terminology Quick Find All Telephone Systems

Last revised: July 05, 2020