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STATION ID - 7047/3.12 9x Datakit Network FOR OFFICIAL USE ONLY This is a 9x system, restricted to authorized persons and for official 9x business only. Anyone using this system, network or data is subject to being monitored at any time for system administration and for identifying unauthorized users or system misuse. Anyone using this system expressly consents to such monitoring and is advised that any evidence of criminal activity revealed through such monitoring may be provided to law enforcement for prosecution. Telecommunication Systems and Structures. by Hybrid (th0rn@coldmail.com). Febuary 1999. (hybrid_blue@hotmail.com) (hybrid@darkcyde.org) Introduction. Welcome to the last part in my series of texts on telecommunications networks. Someone said to me the other day: 'get some hacking sk1llz, phones are bollocks.'.. To me there is no difference between phreaking and hacking, they are both about learning stuff through hands on experience, I hack the phone network rather than computer networks for many reasons.. a) I don't get a 900 net dialup bill, b) The phone network is more ellaborate than most computer networks, c) I can't code, d) I can dial faster than I can type ;) So whats this file about? This file will cover some of the many layers of protocols and network structures of todays phone network, and is primarily aimed at phreaks who want to gain better knowledge of our phone system. Contents. Part I. Analogue systems and techniques 1.1. Basic network structures 1.2. Basic exchange structures 1.3. Centrex services 1.4. Frequency division multiplex (FDM hierarchy) 1.5. Personal communications services (analogue) 1.6. Signalling 1.7. Stored program control (SPC) 1.8. Switching 1.9. Trunking and scanning Part II. Digital systems and technologies (the fun part) 2.1. Developing digital technologies ACD (automatic call distibution) ADSL (asymetrical digital subscriberes line) ATM (asynchronus transfer mode) Digital Centrex 2.2. Signalling CCITT No. 6 (Common channel signalling system number 6) CCITT No. 7 (C7) 4. References 1.1. Basic network structures I'll begin this file by explaining the basics of phone network structures. Each subscriber is conencted to a local junction exchange which provides the power supply for the teminal and the means for switching the subscribers communications needs. Each local exchange is connected via trunk lines into a group of switching centres which manage a load of local exchanges. The total local, plus trunk networks form the national network. Within each country there exists a number of international exchanges which act as switching centres to the international network. The international links are either provided by land-lines, or sub-marine cables or satelites. In the trunk network, two twin wire pairs for transmit and recieve (go and return) - Known as four wire operation. By comparison the subscribers connection to the local exchange is via a single wire pair that performs both functions, the go and return signals being seperated by a special type of transformer known as a 'hybrid'. This device, shown bellow, provides two wire to four wire conversion as follows: <----------------------------------------. | input 2 | <----------oOOOOOOOo-----------oOOOOOOOo- ========= ========= .---oOOOOOOOo---. .---oOOOOOOOo----<------> ____|_______________| | | |______________ | | | | .---. | | (Hybrid transformer) input 3 ||||| | | ||||| | | | | | --------oOOOOOOOo-- ---oOOOOOOOo----<------> ========= ========= ---->------oOOOOOOOo-----------oOOOOOOOo-. | input 1 | ---->------------------------------------ A signal from the four wire side at input 1 will drive the current through. This will induce equal voltages. Beacuse the later inducances are connected in series oposition, the voltages will be self cancelling. None of the signal at input 1 will appear at input 2 and vise versa. At the same time however, a transmmision path exists to the two wire side of the hybrid. The subscribers terminal is dc coupled to the local exchange to similary provide a power supply, but is also ac coupled for the signals, this dual function is controled via a transmission bridge. 1.2. Basic exchange structures For economy, exchange lines and equipment can be shared by subscribers by using a multiplexing technique. Using the assumption that not all subscribers will need to use the system at any given time, the technique show bellow is implemented. (Exchange distribution) ---->--------------. .-----------------------> Incomming trunks | | Outgoing trunks ---->-----------. | | .--------------------> | | | | Concentrator | | | | ___ | | | | ___ | | __|__|___|__|__ | | Expandor <-------->--| |--------| |---------| |----------. Local lines | | | Distributor | | | | <-------->--| |--------|_______________|---------| |------. | | | |___| |___| | | | | | | | | | | | |_______________________________________________________| | | | |_______________________________________________________________| Every 1000 lines may be fed in via a concentrator to 100 exchange distrobution lines. Then to ensure that every subscriber can still connected to every other, a distributor routes these lines through the exchange to a number of expandors, connecting all it's 100 lines to all 1000 subscribers lines. If more than 100 calls are presented to such a system, it is obvious that the excess calls will be blocked for a period of time. So the exchange can also play its part in the group switching concept, the distributor stage has to handle incomming and outgoing trunk connections. 1.3. Centrex services Centrex is the generic title of a number of services that offer the large user (more than 100 extension lines) the facilitys of a PABX (private automatic branch exchange), within certain major exchanges. This avoids the user cost of installing and operating an on-site branch exchange. The concept also allows for different user sites within the same call charge area to share the same equivalent PABX. The extension phones are given short dialling codes within the exchange which can be reached by direct dialing in the manner of normal PABX extension lines. Although the concept will function over the anologue public switched telephone network (PSTN), it is particually well suited for operation over an ISDN system. 1.4. Frequency division multiplex (FDM hierarchy) To maximise the frequency spectrum available over trunk cables and international links, the subscribers base band voice signals covering from 300 to 3400 Hz are translated usinga sideband (SSB) modulation to a higher frequency range suitable for propagation over coaxial cables and radio links. 12 basic channels are modulated on to carriers in the range 64 to 108 KHz and speed 4 kHz apart. When the lower sideband (LSB) is selected, these form a 'group' with a bandwidth of 48 kHz, extending from 60 to 108 kHz. Five groups are then modulated in a similar manner onto carriers spaced at 48 kHz intervals from 420 to 612 kHz to form a 'supergroup'. 16 supergroups are then LSB-SSB modulated onto carriers spaced by 248 kHz from 1116 kHz upwards. This results in band of freqencies from 564 kHz upwards. To utilise the range bellow 564 kHz, a supergroup is modulated on to a 612 kHz carrier which after selection of LSB is reduced to a band between 60 and 300 kHz. The band between 300 and 564 kHz is filled with another supergroup in basic form (312 to 552 kHz). This hierarchy, referred to as 'master' or 'hypergroup', provides a muliplex (including freqency gaps or guardbands to cater for the characteristics of practical filters), with an upper frequncy of close to 4 MHz which is easyily carried over a coax cable. (wake up) =] 1.5. Personal communications services (analogue) Yes, I know this has been covered before, but I thought I'd go over it again. =] Here are will only cover the very basics of radio telephony, there are stacks of files on this subject if you want to read more. Cellular radio: By using either frequency, time or code division multiple access techniques with low power radiation, and suitibly located antennas, the carrier frequencys can be re-used many times over without creating cross-channel interference. Thus by suitibly selecting a power level, radiating frequency and antenna system, a complete network can be built up to provide continuous coverage over a wide area. Such cellular radio phone systems use power levels ranging from around 10 mW upto 20 W and frequencies from around 27 MHz upto 1.8 GHz to provide communications areas ranging from picocells of about 200m diameter. By using freqency agile mobile transmmiter/recievers, it is possible for a subscriber to roam from cell to cell and still maintain communications contact. Ct1 (cordeless telephone, 1st generation): The first step towards cordless operation was applied to the domestic phone and involved replacing the normal cord (wiring) between the handset and instrument with a radio link. These phones operate in 1 of 4 channels within the 27 MHz band and provide a cell of about 200m diameter. In addition to providing this remote link, the system also usulally provides an intercom between the handset and the instrument base station. Ct1+ (cordless telephone 1st generation development): This standardised system moved cordless operation into the European buisness field. The system operates using a trunked version of Ct1 with freqency division multiple access (FDMA) to provide 80 channels within the band 885 to 887 MHz. Because 2 channels are needed to provide for a single duplex speech communications link, a maximum of 40 similatanious calls are possible within each cell. Within the UK, 40 duplex channels are provided within the bands 914 to 915 MHz and 958 to 959 MHz. The mobile and base station transmitters are allocated to the lower and higher freqency range to provide a maximum range of about 400 metres. NMT is a Nordic version operating within the 450 MHz band and C-NET is an equivalent German system. Private mobile radio (PMR): Trunked PMRs are bassically private communications systems operating in the UK within VHF band III that was previously used by 405 line TV services. Several variants are in use and operate within the terms of MPT1327/MPT1343. The service allows roaming between cells and even connections to the international networks. Radiopaging: This is a low cost type of service which is intended to alert a subscriber that he is required to respond by calling back to the base over the national phone network. There are 3 basic techniques in use: * a simple single or multiple audiable tone emitted from the pocket reciever which requires the user to call directly back to a controlling agency. * a numeric pager that displays a limited number of digits. * an alphanumeric display reciever that can recieve simple but detailed messages. TACS/ETACS (total access communications systems/extended TACS): This UK cellular phone system operates within 2 paired 15 MHz bands, 890 to 905 MHz and 935 to 950 MHz, with the mobile transmitter using the lower freqency. The system is a derivative of the American AMPS (advanced mobile phone service) system that operates in 2 segmants of the 800 MHz band, but modifide to operate with 25 kHz channel spacing. The cells are typically of 1 to 2 km diameter. As the service expanded and congestion occured, 2 further sub-bands where added (872 to 888 MHz and 917 to 933 MHz) and this gave rise to the extended TACS concept. 1.6. Signalling Signals are needed within the phone network to establish line acquistion at the start, call routing through the network, monitoring the call progress and detecting line clearence. In addition it is nessasary to provide for such services as billing, quallity of service records and general network managment. When such signalling is carried over the communicaiton lines it is refered to as channel assosciated signalling. Since this technique is not compatable with stored program control, it has been replaced by Common Channel Signalling where a seperated dedicated channel is reaerved for this function (CCS). This is why it is no longer possible to 'interact' with the signalling channel, like with the old C5 hierarchys. It is however possible to do this via direct lines to countrys that operate on this old method of signalling. A system known as the loop dissconnect dialing system, where the line is pulsed at 10 p/s via interupter contacts, was previously used in the UK. This mwthod of signalling is now dead, sinse the advent of multi-frequncy dialing techniques (DTMF), whereas if you press a button, it selects a unique combination of 2 tones of different freqency for transmission over the voice channel. These dual tone multi-frequency (DTMF) tones provide more reliable signalling over analogue lines than the the digital pulses of the loop disconnect system. At the exchange decoder, the signals are filtered into low and high freqencies and then processed to provide addresses in a ROM look-up- table. This then outputs each dialled digit as a 4-bit binary code. 1.7. Stored program control (SPC) As networks have expaned and the range of services offered has increased, system control using computers has become more efficient and economical. Using SPC, all the neccessary opertaional instructions are held in programable read only memories (PROMs). Due to the high degree of flexibility that this provides, systems of widely differing size and architecures can be made to operate together in a compatable manner. 1.8. Switching There are basically 2 concepts used in telephony switching systems. 'Circuit switching', whereas an actual path is set up between subscribers and operates in real-time, and 'Message switching', which involves storing the signals in memory. This method is restricted to digital systems, and is also known as 'store and forward'. Overloading produces call blocking and queing in circuit and message switched systems. The old Strowger automatic exchanges utilised a number of dual motion electro mechanical selector switches coupled in series. Each selector consists of a bank of 10 semicircular rotary switch elements each carrying 10 output contacts. Any particular contact on the switch is then selected by a vertical motion to select the required contact. Then any input line can be connected to any one of 100 output lines. By using 3 such selectors in series it is possible to service any phone system based on 6 figure numbers. For modern exchange applications, electro-mechanical switching is much too slow and unrealible. The first replacment for this type of exchange consisted of matrix cross-point switches used to interconnect input and output lines. That system is now more or less dead, and my favourite type of switch is implemeted: Common Control Switching. Here the incomming directory number is stored in a digital memory and this is then used to find the best route through the switching matrix. In large installations, switching matrices are coupled in series and this is refered to as a 'space divided network'. To maximise the use of excange equipment and utilise computer control, these are operated on the statistical basis that only a realitivaly few interconnections will be needed at any one time. 1.9. Trunking and scanning These terms are usually applied to telephony channels used over radio nets. The frequency spectrum of a trunked network is divided into channels which are managed by a central contoller. A caller obtains access to the network via the controller which allocates a free channel for the duration of the call. Once completed, the channel is returned to the control pool for future re-use. Scanning or self-trunking is an extension of this technique. The equipment of the user making the call, scans the available spectrum to locate a free channel. The user then calls the other person either over a calling channel or the free one, to establish communications over a nominated channel. Without the central control, such a system is likely to crash under overload condition, rather than degrade gracfully like the trunked network. Part II. Digital systems and technologies (the fun part) Hah, did part I boor you? damn it, go back and read it again. In this part of the file will include imph0 on (in my opinion) the best part of telephonics, Digital matrix telecommunication infastructures. O yeah, CCS in your face.. read on.. 2.1. Developing digital technologies ACD (automatic call distibution): This represents a concept that was designed for the optimum managment of a communications system where the traffic consists of shit loads of incomming calls. Each call is distributed to a 'free agent' as it arives without the intervention of an operator, typical applications being credit card validation, air line booking facilitys and similar situations that require the back-up of a large computer-held database. Such a system is designed to control call ques, and stop switch overload withn a PABX or similar network. However ACD is designed to differ from a convensional PABX in the following ways: * Because an incomming call is directed to the 1st free agent rather than being picked up by an operator, less time is lost. * The agents terminals are more sophisticated than the conventional phone terminal. They are normally equipped with a full keyboard and visaul display screen, with a direct link to the operator mainframe computer. * ACD is capable of being able to provide a great deal of statistical managment iformation, such as call queue lenghs, periods over _overload_ and other lost time. * The greater cost of the ACD system is offset by the greater throughput of calls, reduced lost time and calls and by the use of fewer operators. * In some cases, the use of a DTMF phone allows callers to make direct access to sections of the computer data while waiting for a free agent. When the call is _eventually_ picked up, the nessasary customer information can be displayed on the agents screen immediatly to reduce lost time. * ACDs can be networked over PSTN (public switched telephone network) so that several remote common databases can be directly linked. This allows sharing of databases under the loading variation that is bound to happen thoughout the day. It also allows for the shut down of some ACDs during off- peak periods. * Developing systems aslo allow for the use of voice recognition techniques to further reduce a queing problem. (hint- next time you are in a call queue, start shouting violently down the phone) ADSL (asymetrical digital subscriberes line): Experiments have shown that the un-shielded twisted pair (UTP) cables origiaonally designed to carry voice freqency signals in the band of 300 to 3400 Hz, are capable of transporting very much higher frequencies. (hmm) In the ADSL network it is possible to similtaniously continue to use the voice band for normal anolouge phone traffic. In practice it is necessery to be able to sepertate the ADSL signals of a few millivolts amptitude, from the few tens of volts of a ringing tone. ATM (asynchronus transfer mode): Convensional networks carry data in a syncronus manner and because empty slots are circulating even when the link is not needed, network capicity is wasted. The ATM concept, which has been developed for use in broadband metropolitan area networks (MAN) and optical fibre based systems, is supported by both CCITT and ANSI standards, and can also be interfaced to SONET (synchronus optical network). ATM automatically adjusts the network capacity to meet the system needs and can handle data, voice, video, and TV signals. These are transfered in a sequence of fixed length data units called cells. Common standards definitions are provided for both private and public networks so that ATM systems can be interfaced to either or both. ATM is a wideband, low delay, packet like and switching and multiplexing concept that allows flexible use of the transmission bandwidth and is capable of working at data rates as high as 622.08 M bit/s. Digital Centrex: Within Europe, digital Centrex serices are ISDN compatible and meet the CCITT 2.048 Mbit/s PCM standard. These are designed to fit the PSTN's call progress tones, ringing cadences, numbering plans, billing and trunk signalling. The system is well suited to the needs of large coperate users who may also be members of a particlur 'closed user group' (CUG). As in the anolouge case in part I, the network supplier provides PABX facilities within a local exchange and this saves the subscriber space, equipment costs and operating staff expenses. In addidtion it is very eay for the network provider to update the facilities. The services provided by Centrex include call transfer, call- forwarding, call pick up, call waiting, teleconferencing, short code dialing, call holding, call splitting, automatic recall, and CLID. 2.2. Signalling CCITT No. 6 (Common channel signalling system number 6) This signalling specification was designed for operation over a dedicated voice band analouge circuit to handle the requirments of many similanious callers. The system also permits the use of low speed digital modems operating at 1200 bauds using QPSK and a carrier freqency of 1800 Hz over the same audio channel. In the USA, a variation known as 'Common Channel Inter- office Signalling' (CCIS) procedure is adopted by the Bell/AT&T system. CCITT No. 7 (C7) Although the Common Channel Signalling System (CCSS) No. 7 was initially developed to manage call connection and disconnection, it has been expanded to provide many other service functions. The specification which is based on the ISO 7 layer model, is ISDN compatable and suitable for use over a satelite link. _______ _____________ _______________ | 7 | | TCAS | transaction bit 1 | flag | |_______| |_____________| capabilites |---------------| | 6 | | | application | backward | |_______| | | section. | sequence | | | | | | | number | | 5 | | TC | transaction |---------------| |-------| | | | capabilies. a | BIB | | 4 | | | |---------------| |_______| |_____________| | forward | | | | | | sequence | | | | | SCCS | | number | | 3 | |-------------| <------ |---------------| | | | | network signalling | b | FIB | | | |_____________| | |---------------| |_______| | link | message | |link indicator | | | | signalling | transfer| |---------------| | 2 | |_____________| section | c | SIB | |-------| | data link | | |---------------| | 1 | | signalling | | | label | |_______| |_____________| <______| |_______________| OSI CCSS No. 7 | signalling | layers layers | information | |---------------| | check sum | a) Backward indicator bit Signal |---------------| b) Forward indicator bit Structure | flag | c) Serivice information byte |_______________| As shown in the above diagram the message transfer section covers the lower 3 OSI levels. The data link level is a full duplex, 64 Kbit/s link dedicated to signalling. Because the system may have to handle the needs for many thousands of callers similtaniously, it is important that the link is error free. This level ensures that blocks of data are delivered in the correct order, and are not transmitted a rate to high for the reciever and make sure that data is not duplicated. CCSS-7 has a large degree of inbuilt flexibilty that allows new services to be added without changes to thr network or protocol. 4. References Communications Technolgy (2nd edition) -book Bell labs ss7 research papers Telecom Digest Well thats it for this file, hope you enjoyed it. Shouts fly out to the following people: [9x] [Substance] [d4rkcyde] [downt1me] [elf] [psyclone] [backa] [xio] [public-n] [b4b0] [klaus floride] [sim] [volt4ge] [nothingg] [everyone in #darkcyde #9x #b4b0 #legions #phonez #2600-uk EfNet] 9x SpreAd1ng thE hp in thE neW m1lleniuM. www2.dope.org/9x d4rkcyde ideling into thE neW milLeniuM. www.darkcyde.8m.com -----BEGIN PGP PUBLIC KEY BLOCK----- Version: PGPfreeware 5.0i for non-commercial use Comment: I Encrypt, Therefore I Am mQGiBDa/fzsRBAD7WOrvQKJnY0O+GzKkIShEG4JNNtMDN1c1ouul479S5P2Z0WeE /Ty/HSnpxZqoRY+nAfGWEvqGZCX8Nzq6yWX00s0YZgW34nMGU+EtK/28JDBdXjl9 cVxzIyLJHr8FFLOAmUDum6VEFBDP8iIICnwvngWK+ju8IKzbVIjUWiaD2QCg/5fy MdnekZYY9tkG5hC7FfanCn0EAK5/RiT4gimT5A+ybn7UvBjj1fJelDscjQKpcB61 /H4FpNEqhypXmhPFzF0pot0KYj7YBFeJ7GdBGt2VsQD7oSo52ieEN9AGSWoNzY5s O84Bq0gNAQit5z8Q5QIPbFSiWDSHS8i+0+ZvflPsn1yxgrv/TRUElIZnAS2O1IEI p39qBADMTlu/llrM5gLlujSUc2gxQdoDwBku+n5XG7ZDAUK/K8HLDdcSW39yAFjQ /qAMUwGIGFAdnZ0PZGxIM+cLsRFy9w9mLrJ+6yCQplUYaeePvPM1tezu5tw41YfG a6RBiNDXex+x76eWBWMh1tXzFCniF3H8KyYwNudJRIoidz1XrbQbaHlicmlkIDx0 aDBybkBjb2xkbWFpbC5jb20+iQBLBBARAgALBQI2v387BAsDAQIACgkQj7adS1ST +wd5OACgz128jkrPUIIYb9QowRFvDtfNCQIAoP4LKe6f1sO6R6H23oe5mldPG612 tCAgICAgICAgPGh5YnJpZF9ibHVlQGhvdG1haWwuY29tPokASwQQEQIACwUCNr9/ 7QQLAwECAAoJEI+2nUtUk/sHw/EAn0MW3Gniiq+qIsCMAG94KN/VjdIIAJoDV+mb IIFODPI+/HP4mIzcOvU0HbkEDQQ2v39qEBAA+RigfloGYXpDkJXcBWyHhuxh7M1F Hw7Y4KN5xsncegus5D/jRpS2MEpT13wCFkiAtRXlKZmpnwd00//jocWWIE6YZbjY De4QXau2FxxR2FDKIldDKb6V6FYrOHhcC9v4TE3V46pGzPvOF+gqnRRh44SpT9GD hKh5tu+Pp0NGCMbMHXdXJDhK4sTw6I4TZ5dOkhNh9tvrJQ4X/faY98h8ebByHTh1 +/bBc8SDESYrQ2DD4+jWCv2hKCYLrqmus2UPogBTAaB81qujEh76DyrOH3SET8rz F/OkQOnX0ne2Qi0CNsEmy2henXyYCQqNfi3t5F159dSST5sYjvwqp0t8MvZCV7cI fwgXcqK61qlC8wXo+VMROU+28W65Szgg2gGnVqMU6Y9AVfPQB8bLQ6mUrfdMZIZJ +AyDvWXpF9Sh01D49Vlf3HZSTz09jdvOmeFXklnN/biudE/F/Ha8g8VHMGHOfMlm /xX5u/2RXscBqtNbno2gpXI61Brwv0YAWCvl9Ij9WE5J280gtJ3kkQc2azNsOA1F HQ98iLMcfFstjvbzySPAQ/ClWxiNjrtVjLhdONM0/XwXV0OjHRhs3jMhLLUq/zzh sSlAGBGNfISnCnLWhsQDGcgHKXrKlQzZlp+r0ApQmwJG0wg9ZqRdQZ+cfL2JSyIZ Jrqrol7DVes91hcAAgIQAOyRU/cZXypCNaY6O8ryJxxTIEz4vXc3rAmHUiUvmgVI m18huLOHiWxsOHz2GIjGEtzw5ANCeRNclLnw29USyddRVnZUHbmFZN0gjhT6FD1c TRA1UjCJ0ql0wpVntokaR4OsqOZQ+q2rRalNuQX0na3bYfAdVKlo/SIxSD925m5s DuFRMpLe79qLGvD4NGLdwGi8vWJbnw5RU47nIxFpmLdJ9W8pIHGW15Zw4aVsV8fE KJ+usOOkNUvYGJ+HlkpRNSSg0GO1ds/WLr2D647qJVrSKqzt7FJ9WQc3DNLIWqtL BDiaQC8tSGhynRMZdp2nO0awKOY/EdefyzE/5sBhxj0ZdrxKLnvCdUO+nDivpZiR 6jM/kj/KeOXjqOfCipqFD4g8MqW40xskXtm2e1GCoku5iVwzqQp4nPcH8Zcpg25B KHleuBpdTf+BbYrtYmpPnmMhWdcURHJQrBcW9BIMEW0UrzAqE8wdCQNomJdz3ppf K1Ncr/6T1pZ+95pyZdu1D3TEuRuNXWLbSuQMOUncMDprqN/I/TSsNCPJfDeWtOoV qGZ9/Ud5yJoRsanWVxbrnav/Nr7TKtDYU2aP5rET+5t00LZTEWfnzmev6hQyWLO+ gZQ4mCIIYduEiwCfGjd/onq2QWdysW7eh4Uktu8zOyNeYABrjELIZRkoGXhJrMEi iQA/AwUYNr9/ao+2nUtUk/sHEQL9fQCgl9QLwXKnfUeiTeKucnANqDQnctsAniLL l8+4/uZr0QO0daLIePeRexhrmQENAza/N1cAAAEIANREM8G+yh0SmliGGB9FV0Zr Yk+5zKs5VZp5Cx9XLsb0k4dtiDxDAZKhLQMF2YeEoU6PvmRwQcEpz8XAJLPAjOyP ngxLMmp2uiFamudFOEE516Vs0at3UUNXGh7BJS9THbgwdRVQCsPKpSS6M6/4BbcX Kyde0TcLVkRUFUeBoQt1YbObwL74zgMhrrmyidii+EfL228wBW3eyApz5qL9g1nk BFPrMinfghw9SybA8NfkInj4RP41yJwcSb0Q9EzjI+mxsWG7rd31kwb060lP8BLu ZzHKnqKwO+oJMMow4+oWjqhGUbODEWOdPLPy3EOf9V5tgzItfPwu9MlfXKQqlT0A BRG0G2h5YnIxZCA8dGgwcm5AY29sZG1haWwuY29tPokBFQMFEDa/N1f0yV9cpCqV PQEBJLUH/i8EBENzw8A+XfXMzfLM+ry2hAa6qbLZCeo9bj76XzzHWviYXwkPAjSH X31ESZ7qqMVdb2NN4epLYD3J4ui7ygSZMw+DShQH62kCAfHXJwnvdI02ERn21gyT m4pzxQX26sjQQRdmlr+Z7KsYe4eNUlHlXwP15WggKr5D90PaWzx9vqomB1O4w0E1 W6GgTFXOurR/t2zoybJj8MJcS24LF8CKcpNHhsI0E5uBuyKIJwYRrlGvoUDAfuzR QxkliyLtyKsPwLuodCDVcgH13g80hrsGdPObPr+QUTluPwUTSQfoMturimswSKvp 7oRrJiSlVzrE1bEEhZR9hnFqogL6QXg= =lHXD -----END PGP PUBLIC KEY BLOCK----- *********************************************** * hybrid_blue@hotmail.com | DSS: 0x5493F1307 * * th0rn@coldmail.com | D-H: 0x8B314ED9 * * hybrid@darkcyde.org | RSA: 0xA42A953D * * th0rn@cyberspace.org | * * www2.dope.org/9x | 1999-02-09 * * www.darkcyde.8m.com | * *********************************************** ___ ___ _____.___.____________________ ____________ hybrid@b4b0.org / | \\__ | |\______ \______ \/_ \______ \ hybrid@ninex.com / ~ \/ | | | | _/| _/ | || | \ hybrid.dtmf.org \ Y /\____ | | | \| | \ | || ` \ ---------------- \___|_ / / ______| |______ /|____|_ / |___/_______ / \/ \/ \/ \/ \/