The Local Loop; ModemsThe 20hz ringing current (Floyd Davidson) [4487 bytes] 60hz hum (Floyd Davidson) [3550 bytes] Dealing with ambient noise (John Higdon) [1641 bytes] Line balance (Floyd Davidson; John Higdon) [13287 bytes] Baud (Ron Dippold) [799 bytes] Busying out a line (John Higdon) [3317 bytes] Cable loading (Floyd Davidson) [10480 bytes] Cable splicing (John Higdon; Larry Lippman) [23696 bytes] Cable TV system reliability (John De Armond) [4056 bytes] Category 5 cable (Floyd Davidson) [8366 bytes] Channel banks (the curse of modems) (Floyd Davidson) [8465 bytes] Techniques for complaining (Floyd Davidson; John Higdon) [58922 bytes] Conference bridges (Floyd Davidson; John Higdon) [19237 bytes] CPC (Al Varney) [9138 bytes] CSUs (Floyd Davidson) [2563 bytes] Decibels (Al Varney; Floyd Davidson) [23550 bytes] The Demarcation point (Floyd Davidson) [3840 bytes] Spoofing of dialback modems (John B. Nagle) [2958 bytes] Digital pads (Floyd Davidson) [4262 bytes] Digital Line Concentrators (Fred Goldstein) [3696 bytes] Dry pairs (Floyd Davidson) [8878 bytes] Fast busy (Alan L Varney; Floyd Davidson) [11257 bytes] Hybrids (Floyd Davidson) [7681 bytes] Infinity transmitters (John G. De Armond; Brian Kantor; Larry Lippman; W1GSL ("Steve F")) [68617 bytes] Gel cells (John G. DeArmond) [1405 bytes] ISDN (Fred Goldstein; John Nagle) [15205 bytes] The ISDN encoding (Al Varney; Fred R. Goldstein) [21875 bytes] ISDN modems (Fred Goldstein) [5413 bytes] Ordering ISDN (Fred R. Goldstein) [5167 bytes] Line balance (Floyd Davidson) [2702 bytes] Line current (Floyd Davidson) [11716 bytes] Line quality (Floyd Davidson) [28337 bytes] Detection of line stealing (John Nagle) [992 bytes] Loop current (Floyd Davidson) [24630 bytes] Modem dialing wait commands (Floyd Davidson) [1781 bytes] Modems being fried (John R. Levine) [1135 bytes] Modem signal levels (Floyd Davidson; tabourian@compuserve.com) [41375 bytes] Modems on satellite lines (Floyd Davidson) [4295 bytes] Modem SNR (Floyd Davidson) [7550 bytes] Modular cables (John Higdon) [1132 bytes] Remote control (Floyd Davidson) [2944 bytes] REN (John Higdon; Julian Macassey) [10916 bytes] RF interference (Floyd Davidson; John Higdon) [2812 bytes] Ring detector circuit (Henry Spencer) [3582 bytes] Sealing current (Floyd Davidson) [2465 bytes] The Shannon limit (Fred R. Goldstein) [1670 bytes] Shielding (Floyd Davidson) [1920 bytes] Intermittent shorted line (Floyd Davidson) [7521 bytes] Sidetone (John Higdon) [2283 bytes] Subscriber carrier (John Higdon) [3616 bytes] Tariff violation charges (Floyd Davidson) [5098 bytes] Telephone fishing (John G. DeArmond) [2562 bytes] Getting test numbers (Floyd Davidson) [4030 bytes] Twisted pair (Floyd Davidson) [32078 bytes] UK phone wiring (Julian Macassey) [3051 bytes] Central Switching; Long CablesThe 1ESS switch (Al Varney) [20336 bytes] Automatic Message Accounting (Floyd Davidson) [2543 bytes] Answer supervision (Fred R. Goldstein; John Higdon) [3782 bytes] Antistatic precautions (Floyd Davidson) [3871 bytes] B8ZS (David G. Lewis; Al Varney; Floyd Davidson; Ken Becker) [31380 bytes] Cable rustling (Larry Lippman; Michael H. Warfield) [6440 bytes] Call forwarding loops (Brian Kantor; Al Varney) [8390 bytes] Call waiting and 3-way calling (Al Varney) [6982 bytes] Choke networks (John Higdon) [6809 bytes] Clock slips (Floyd Davidson; Fred R. Goldstein; Ken Becker) [26372 bytes] Central Office batteries (Floyd Davidson; John Higdon) [3600 bytes] Central Office fires (Larry Lippman) [11787 bytes] Congestion control (Alan L Varney) [13478 bytes] Central Office cutover (Alan L Varney) [15006 bytes] Distributed switching (Fred Goldstein; Floyd Davidson) [13362 bytes] DMS maintenance (Floyd Davidson) [7789 bytes] E+M signaling (Floyd Davidson) [4905 bytes] Emergency switch-in-a-truck (Al Varney; Pat Turner) [4988 bytes] Advantages of fiber optics (Fred R. Goldstein) [2759 bytes] The grace period before billing starts (Floyd Davidson) [3502 bytes] Internet phones (Fred R. Goldstein; John Higdon) [19048 bytes] Long Distance carrier test numbers (John R Levine) [527 bytes] Line Load Control (Larry Lippman) [5954 bytes] The "no test" trunk (John R. Covert) [3878 bytes] Oceanic cable (Floyd Davidson; John Nagle; John R. Covert) [8119 bytes] Old central offices and dialing speed (Steve Bellovin) [2150 bytes] Panel-type central office switches (John Higdon) [4552 bytes] Permafrost (Floyd Davidson) [1922 bytes] Phone privacy (Floyd Davidson) [4138 bytes] Pressurized cables (Larry Lippman) [2892 bytes] Ring generator machines (John Higdon) [3283 bytes] Robbed bit signaling (Floyd Davidson) [4276 bytes] Routing errors (Alan L Varney) [5356 bytes] Same number error (Barry Ornitz; Patton M. Turner) [12780 bytes] Switch resources (Floyd Davidson) [15269 bytes] Switch type detection (Al Varney; Fred R. Goldstein) [2909 bytes] T1 (Floyd Davidson) [4817 bytes] T1 signaling (Floyd Davidson) [15956 bytes] T1 synchronization (Floyd Davidson) [5597 bytes] |
Radio902mhz (Barry Ornitz) [3379 bytes] Airplanes and cellular phones (George Goble) [12943 bytes] Alaskan radar (Floyd Davidson) [1805 bytes] CDMA (Phil Karn; Ron Dippold) [27784 bytes] Cell phone antennas (Brian Kantor) [4179 bytes] Cell phone GPS (John De Armond) [4249 bytes] Cellphone fingerprinting (Erik Ramberg; John Higdon) [6795 bytes] Arthur C. Clarke and geosynchronous orbit (Ron Dippold) [1180 bytes] Digital packet networks (Phil Karn) [9272 bytes] FM interference (John Higdon) [1807 bytes] Highway emergency phones (Brian Kantor) [2075 bytes] Microwave spectrum use (Fred R. Goldstein) [2461 bytes] NTSC (Jim Rees; John Higdon) [9071 bytes] Passive repeaters (Barry Ornitz; John DeArmond) [5970 bytes] Radio phone power figures (Fred R. Goldstein) [985 bytes] Satellite reception (Floyd Davidson) [5503 bytes] Tropo scatter (Floyd Davidson) [6633 bytes] UHF propagation (Klein Gilhousen) [2177 bytes] Politics, History, Social EngineeringThe suppressed article from 73 magazine (Fred R. Goldstein; John G. DeArmond) [5388 bytes] ADSL politics (Macy Hallock) [3865 bytes] Alarm autodialers (Henry Spencer) [774 bytes] AOSs (John De Armond; John Higdon; Larry Lippman) [31032 bytes] ASCAP (John De Armond; John Higdon) [4306 bytes] AT&T sales, as of 1990 (Dave Levenson; Roy Smith) [15301 bytes] Autovon (Floyd Davidson) [3006 bytes] Bell Atlantic (David Lesher; Fred Goldstein) [51818 bytes] Bill collection (John Higdon) [3180 bytes] Billing accuracy (John Higdon) [4599 bytes] Blue boxes (David Lesher; John Higdon) [4861 bytes] Telemarketing boiler rooms (John De Armond; Julian Macassey) [5755 bytes] California phone companies (John Higdon; Fred R. Goldstein) [74019 bytes] Recording your own calls (John G. DeArmond; Floyd Davidson; John Higdon) [7607 bytes] Carterfone (Fred R. Goldstein; John Higdon) [4318 bytes] Chicago (Brett Frankenberger) [2811 bytes] Chicago freeway control (Alan L Varney) [9919 bytes] COCOTS (Fred R. Goldstein) [4019 bytes] Competition (John Higdon) [120349 bytes] Credit card merchant accounts (John Higdon) [1447 bytes] Digital line costs (Fred R. Goldstein) [4622 bytes] European phones (Fred R. Goldstein) [1879 bytes] FBI wiretapping (Floyd Davidson; Fred R. Goldstein) [15459 bytes] The FCC (John Higdon) [4160 bytes] Flat rates for local calling (Floyd Davidson; Fred R. Goldstein) [30005 bytes] German phone story -- 1968 (Robert S. Helfman) [2935 bytes] The GSM cipher (Ross Anderson) [9335 bytes] John Higdon (John Higdon) [7314 bytes] The growth of the Internet (Floyd Davidson) [5440 bytes] The inward operator (John R. Covert; Robert E. Seastrom; Bill Chiarchiaro; Gabe M Wiener) [22160 bytes] ISDN politics (Floyd Davidson; Fred R. Goldstein; Macy Hallock; Henry Spencer) [36067 bytes] ISDN SPIDs (Fred R. Goldstein) [11062 bytes] ISDN standards (Fred R. Goldstein) [9584 bytes] Phones in Japan (John Higdon) [10214 bytes] Larry Lippman (Barry Ornitz; Marvin Minsky) [15071 bytes] Determining whether a call is local (Macy Hallock) [2052 bytes] Local call competition (Fred Goldstein) [29370 bytes] MCI (John Higdon) [6089 bytes] Modem tax (various attempts) (Fred R. Goldstein) [8543 bytes] NSAKEY (Brett Frankenberger; Thor Lancelot Simon) [12493 bytes] Pacbell PCS hack (John Higdon) [17388 bytes] Pakistani phones (Julian Macassey) [7352 bytes] Phone sex (Pat Townson) [8104 bytes] PICC (Fred R. Goldstein) [5399 bytes] Pirate radio (John Higdon) [2604 bytes] Presidents (John Nagle) [982 bytes] PUC interventions (Fred Goldstein) [2296 bytes] Radio idiots (John Higdon) [3144 bytes] Rural lines (Fred R. Goldstein; Larry Lippman) [29657 bytes] Phone company secrecy (John Higdon) [2669 bytes] Sprint ANI spoofing (John Higdon) [3158 bytes] Sprint (Fred R. Goldstein; Ronald D. Havens) [2956 bytes] Telegraph cables [3516 bytes] Telemarketers (John Higdon; John DeArmond) [10542 bytes] Toll alerting (John R Levine) [1888 bytes] Touchtone charges (John Higdon) [2800 bytes] US West (Floyd Davidson) [2226 bytes] Wrong numbers (Andrew Peed; John Higdon; Roy Smith) [17991 bytes] |