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Title
Date Archived
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CD-ROM Software Library
Jul 4, 2020 General Datacomm
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General DataComm Technical Publications Library Issue 1 000R002-005
Topics: general datacomm, telecommunications, manuals
The Stranger: Seattle's Only Newspaper
Mar 11, 2020
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The Stranger: Seattle's Only Newspaper
Feb 28, 2020
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The Stranger: Seattle's Only Newspaper
Feb 17, 2020
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The Stranger: Seattle's Only Newspaper
Jan 29, 2020
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The Stranger: Seattle's Only Newspaper
Jan 16, 2020
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The Stranger: Seattle's Only Newspaper
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The Stranger: Seattle's Only Newspaper
Dec 24, 2019
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The Stranger: Seattle's Only Newspaper
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The Stranger: Seattle's Only Newspaper
Nov 21, 2019
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The Stranger: Seattle's Only Newspaper
Nov 21, 2019
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The Stranger: Seattle's Only Newspaper
Nov 21, 2019
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The Stranger: Seattle's Only Newspaper
Nov 21, 2019
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The Stranger: Seattle's Only Newspaper
Nov 21, 2019
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The Stranger: Seattle's Only Newspaper
Nov 21, 2019
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The Stranger: Seattle's Only Newspaper
Nov 21, 2019
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The Stranger: Seattle's Only Newspaper
Nov 21, 2019
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The Stranger: Seattle's Only Newspaper
Nov 21, 2019
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The Stranger: Seattle's Only Newspaper
Nov 21, 2019
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The Stranger: Seattle's Only Newspaper
Nov 21, 2019
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The Stranger: Seattle's Only Newspaper
Nov 21, 2019
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The Stranger: Seattle's Only Newspaper
Nov 21, 2019
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The Stranger: Seattle's Only Newspaper
Nov 21, 2019
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The Stranger: Seattle's Only Newspaper
Nov 21, 2019
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The Stranger: Seattle's Only Newspaper
Nov 21, 2019
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The Stranger: Seattle's Only Newspaper
Nov 21, 2019
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The Stranger: Seattle's Only Newspaper
Nov 21, 2019
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The Stranger: Seattle's Only Newspaper
Nov 21, 2019
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The Stranger: Seattle's Only Newspaper
Nov 21, 2019
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The Stranger: Seattle's Only Newspaper
Nov 21, 2019
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The Stranger: Seattle's Only Newspaper
Nov 21, 2019
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The Stranger: Seattle's Only Newspaper
Nov 21, 2019
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The Stranger: Seattle's Only Newspaper
Nov 21, 2019
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The Stranger: Seattle's Only Newspaper
Nov 21, 2019
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The Stranger: Seattle's Only Newspaper
Nov 21, 2019
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The Stranger: Seattle's Only Newspaper
Nov 21, 2019
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The Stranger: Seattle's Only Newspaper
Nov 21, 2019
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The Stranger: Seattle's Only Newspaper
Nov 21, 2019
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The Stranger: Seattle's Only Newspaper
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The Stranger: Seattle's Only Newspaper
Oct 26, 2019
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The Stranger: Seattle's Only Newspaper
Oct 10, 2019
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Bell System Drawings
Oct 8, 2019 Bell Telephone Laboratories Incorporated
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The scanner portion of this circuit transforms electromechanical contact opens and closures with or without resistance battery into digital logic TTL levels. The distributor portion of this circuit interfaces 5-volt digital logic TTL to electromechanical circuits by means of mercury relays.
Topics: ttl, relay
Bell System Drawings
Oct 8, 2019 Bell Telephone Laboratories Incorporated
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The scanner portion of this circuit transforms electromechanical contact opens and closures with or without resistance battery into digital logic TTL levels. The distributor portion of this circuit interfaces 5-volt digital logic TTL to electromechanical circuits by means of mercury relays.
Topics: ttl, relay
Bell System Drawings
Oct 8, 2019 Bell Telephone Laboratories Incorporated
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The scanner portion of this circuit transforms electromechanical contact opens and closures with or without resistance battery into digital logic TTL levels. The distributor portion of this circuit interfaces 5-volt digital logic TTL to electromechanical circuits by means of mercury relays.
Topics: ttl, relay
Bell System Drawings
Oct 8, 2019 Bell Telephone Laboratories Incorporated
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This circuit implements a general purpose unit which, through the use of a programmable control section, may be used in applications which require the observance and control of electromechanical circuits and the communication of information to an external device.
Topics: scanner, distributor
Bell System Drawings
Oct 8, 2019 Bell Telephone Laboratories Incorporated
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This circuit implements a general purpose unit which, through the use of a programmable control section, may be used in applications which require the observance and control of electromechanical circuits and the communication of information to an external device.
Topics: scanner, distributor
Bell System Drawings
Oct 8, 2019 Bell Telephone Laboratories Incorporated
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The Maintenance Data Transmitter (MDT) is a trouble data collection device for No. 5 crossbar offices using the Automatic Trouble Analysis (ATA) System. It is designed to collect the trouble data presently punched in trouble record cards and forward this information via data link to a central computer for analysis.
Topics: 5xb, maintenance
Bell System Drawings
Oct 8, 2019 Bell Telephone Laboratories Incorporated
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The Maintenance Data Transmitter (MDT) is a trouble data collection device for No. 5 crossbar offices using the Automatic Trouble Analysis (ATA) System. It is designed to collect the trouble data presently punched in trouble record cards and forward this information via data link to a central computer for analysis.
Topics: 5xb, maintenance
Bell System Drawings
Oct 5, 2019 Bell Telephone Laboratories Incorporated
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This circuit provides means for testing subscriber lines and cable conductors when connected through test trunks. Tests may be made to central offices at the same location as the test desk or at other locations.
Topic: test trunk
Bell System Drawings
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This circuit provides 4-wire toll line terminating equipment, known as the main station, with facilities for either telegraph or telephone service over the toll line. The toll line is switched, at required transmission levels under control of the main station, to telephotograph or equipment for sending or receiving pictures or to the telephone equipment for 2-way telephone service.
Topics: toll, telephotograph, telephone
Bell System Drawings
Oct 5, 2019 Bell Telephone Laboratories Incorporated
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This circuit is for use with the panel, step-by-step, manual or crossbar office end of a two-wire toll connecting trunk arranged for connection to a coin box subscribers line.
Topics: coin, step, panel, manual, crossbar
Bell System Drawings
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This circuit provides 4-wire toll line terminating equipment, known as the main station, with facilities for either telegraph or telephone service over the toll line. The toll line is switched, at required transmission levels under control of the main station, to telephotograph or equipment for sending or receiving pictures or to the telephone equipment for 2-way telephone service.
Topics: toll, telephotograph, telephone
This circuit provides for (a) intercommunication between maintenance men in the switch room, (b) for clearing permanent signals due to the calling party holding the connector and (c) for one-way transmission tests of connectors.
Topics: step, test, trunk
This circuit provides for intercommunication between maintenance men in the switch room, for clearing permanent signals due to the calling party holding the connector and for one-way transmission tests of connectors.
Topics: step, trunk, test
This circuit provides a direct connection between a CX signalling type B or SX signalling trunk and a toll incoming selector.
Topics: toll, step
This circuit provides a means of connecting a two-wire trunk incoming from a distant step-by-step office, to a three-wire rotary out-trunk switch having access to trunks to a distant dial office.
Topics: step, trunk
Bell System Drawings
Oct 5, 2019 Bell Telephone Laboratories, Incorporated
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This circuit is used to furnish the necessary interruptions for prepay coin trunk circuits and coin collect and monitor circuits, and is arranged to bring in an alarm when a coin trunk associated with it fails to properly perform its function in disposing of a coin within a definite interval of time.
Topic: coin
Bell System Drawings
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This circuit provides means by which the central processor, under direction of the stored program and acting through scanner and signal distributor circuits, can carry out the functions required in establishing a test path from a local test desk No. 14 or local test cabinet No. 3 to a customer line.
Topics: test equipment, trunk
Bell System Practices
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This addendum supplements the AT&T Numerical Index and lists the following: All PNB issued practices, addendums & appendices. Long Lines practices Standard for use in PNB Areas. AT&T Practices NOT STANDARD in PNB. (See AT&T index for issue number.)
Topics: pacific northwest bell, carrier
Bell System Practices
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This section provides an index of System-issued sections in Division 362.
Topics: carrier, bell system
The Stranger: Seattle's Only Newspaper
Sep 27, 2019
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Bell System Magazines
Sep 23, 2019 Pacific Telephone & Telegraph Company
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Bell System Magazines
Sep 23, 2019 Pacific Telephone & Telegraph Company
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Bell System Magazines
Sep 23, 2019 Pacific Telephone & Telegraph Company
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Bell System Magazines
Sep 23, 2019 Pacific Telephone & Telegraph Company
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Bell System Magazines
Sep 23, 2019 Pacific Telephone & Telegraph Company
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Bell System Magazines
Sep 23, 2019 Pacific Telephone & Telegraph Company
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Bell System Magazines
Sep 23, 2019 Pacific Telephone & Telegraph Company
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Bell System Magazines
Sep 23, 2019 Pacific Telephone & Telegraph Company
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Bell System Magazines
Sep 23, 2019 Pacific Telephone & Telegraph Company
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Bell System Magazines
Sep 23, 2019 Pacific Telephone & Telegraph Company
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Bell System Magazines
Sep 23, 2019 Pacific Telephone & Telegraph Company
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Bell System Magazines
Sep 23, 2019 Pacific Telephone & Telegraph Company
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The Stranger: Seattle's Only Newspaper
Sep 13, 2019
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The Stranger: Seattle's Only Newspaper
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The Stranger: Seattle's Only Newspaper
Aug 15, 2019
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The Stranger: Seattle's Only Newspaper
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The Stranger: Seattle's Only Newspaper
Jul 20, 2019
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The Stranger: Seattle's Only Newspaper
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The Stranger: Seattle's Only Newspaper
Jun 20, 2019
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Community Texts
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The Si3216 ProSLIC® is a low-voltage CMOS device that provides a complete analog telephone interface supporting both wideband (50 Hz to 7.0 kHz) and narrowband (200 Hz to 3.4 kHz) audio codec modes for enhanced voice quality in Voice-over-IP (VoIP) applications. The ProSLIC integrates subscriber line interface circuit (SLIC), wideband voice codec, and battery generation functionality into a single fully-programmable device for global operation using only one hardware solution. The Si3216’s...
Topics: si3216, voip, slic, interface, datasheet
Community Texts
Jun 14, 2019 Silicon Laboratories
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The ProSLIC™ has very programmable functions. Flashing a neon bulb for message waiting is one application that the ProSLIC can be programmed to do. Neon bulbs inherently have high break over voltage (>90 V). The ProSLIC’s ringing oscillator can be set to pulse >90 V across TIP and RING at a rate and rise time as to not “tinkle” a phone’s ringer. Programming the ProSLIC’s ringing function to achieve a neon flash signal is described below.
Topics: neon, proslic, an33
The Stranger: Seattle's Only Newspaper
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The Stranger: Seattle's Only Newspaper
May 22, 2019
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Bell System Drawings
May 19, 2019 Bell Telephone Laboratories, Incorporated
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A bootstrap program is a method used to get a program 'foot' into the door of the memory. In other words, when a volitile store loses its memory due to a system outage or program bug, an I/O device containing a backup copy of the program will be read in usually through a hardware-software handshaking to reload memory. Bootstrap programs are the software end of this reload and range from an absolute reload of all memory to a sophisticated selective partial reload of only mutilated memory. The...
Topics: 3ess, bootstrap, cinit
The Stranger: Seattle's Only Newspaper
May 11, 2019
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Bell System Drawings
May 9, 2019 Bell Telephone Laboratories, Incorporated
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Bell System drawing. Missing sheets F.
Topics: KS-16765, announcement
Bell System Documents
May 5, 2019 Bell Telephone Laboratories, Incorporated
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This specification covers the requirements for the recovery of the 685A, B, C; 686A, B, D; 688A, B, C; 690A1, A2, A3; 690B1, B2, B3, 690C1, C2, and C3; 1690C1, C2, C3; 2690C1, C2, and C3 Subscriber Sets.
Topics: bsrs, subset
Bell System Documents
May 5, 2019 Bell Telephone Laboratories, Incorporated
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This specification covers the requirements for the recovery of F1A Ringers.
Topics: bsrs, ringer, f1a
Bell System Documents
May 5, 2019 Bell Telephone Laboratories, Incorporated
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This specification covers the requirements for the recovery of E1A, E1B, E1C, E1D, E1AM, and E1CM Ringers.
Topics: bsrs, ringer, e
Bell System Documents
May 5, 2019 Bell Telephone Laboratories, Incorporated
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Appearance standards for subsets and bell boxes. Fragmentary, missing page 1.
Topics: bsrs, bell box, subset
Bell System Documents
May 5, 2019 Bell Telephone Laboratories, Incorporated
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This specification covers the connections for recovered multislot coin collectors.
Topics: bsrs, coin, connections
This specification replaces BSP sections D353.301, D353.302, D353.303, D353.304, D353.305, and D-353.306 and BSRS-353.307 and BSRS-353.308. Changes made in the process of this replacement were sufficiently extensive to preclude the use of marginal arrows. However, future revisions of this specification will be so indicated. This specification covers the connections for the telephone sets indicated in 2.01.
Topics: bsrs, 302, 303, 304, 305, 306, 307, 309
Bell System Documents
May 5, 2019 Bell Telephone Laboratories, Incorporated
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This specification covers the connections and cording for 592-type telephone sets.
Topics: bsrs, 592, sets, cording
Bell System Documents
May 5, 2019 Bell Telephone Laboratories, Incorporated
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This section covers the cording of plugs of the types used in connection with portable station telephone sets, etc.
Topics: bsrs, plugs, 274, 283
Bell System Documents
May 4, 2019 Bell Telephone Laboratories, Incorporated
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This specification covers the cording for the hand telephone sets of 117, 201, 211, 212, 213, and 214 types.
Topic: bsrs
Bell System Documents
May 4, 2019 Bell Telephone Laboratories, Incorporated
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This specification covers the cording for equipped A-type handset mountings, B-type hand telephone sets and 102, 103, 202, 203, 204, 205, 208, and 215-types of hand telephone sets.
Topics: bsrs, D-353.251, desk set
Bell System Documents
May 4, 2019 Bell Telephone Laboratories, Incorporated
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This specification covers the connections for the hand telephone sets (hanging type) that are listed in Table A.
Topics: bsrs, telephone set, hanging
Bell System Documents
May 4, 2019 Bell Telephone Laboratories, Incorporated
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This specification provides General Requirements applicable to the repair of A, AA, AR, AG, AJ, AXXXXXX, B, D, ED, FB, FC, FE, HS, J, JD, JG, JK, JL, JW, NA, P, R, SL, SN, TA, TN, UD and similar codes used in TSPS, ETS and Ancillary Equipment. These requirements shall be applied to the aforementioned families of circuit packs unless specifically excluded in the individual BSRS.
Topics: bsrs, tsps, ets, circuit pack
Bell System Documents
May 4, 2019 Bell Telephone Laboratories, Incorporated
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This specification provides instructions for the return of defective air dryer compressors from Telco's to Western Electric and subsequent shipment to the supplier's repair center. All air dryers used in telephone exchanges (central offices) are equipped with Nash Engineering Company compressors; model number HK-10 and HK-15.
Topics: bsrs, nash hk-10, nash hk-15