333333 111 333333 333333 77777777 333 333 1111 333 333 333 333 777 333 111111 333 333 777 333 111 333 333 777 333 111 333 333 777 333 111 333 333 777 333 111 333 333 777 333 333 111 333 333 333 333 777 333333 111 333333 333333 777 PPP h h rrrr EEEE AA k k I N N GGGGG P P h h r r E A A k k I NN N G PPP hhhhh rrrr EEE AAAA kk I N N N G GGG P h h r r E A A k k I N NN G G P h h r r EEEE A A k k I N N GGGGG http://www.l0p.net/1337 http://www.31337phreaking.org http://www.313370.2ya.com http://iconja.cjb.net ******Telecom terminology****** By: Captain B Crosstalk (abbreviated as XT)-Condition where conversation from one line bleeds over, and is heard on another line. Conversation from other line may only be faintly heard, or may be more noticeable. But, although you may hear conversation from the otherline, they may not necessarily hear the conversation from your line. Correct crosstalk by keeping the wire pairs further apart from each other, and twisting each wire pair. Short- Condition where both wires in a pair are making contact with each other, thereby shorting the pair, resulting in zero voltage. And, if the ring (negative polarity) wire from one line is making contact with the tip (positive polarity) wire from another line, both lines will be shorted out. Open- Condition of no voltage due to either the ring, tip, or both wires not making contact. This could be due to a break in the wiring somewhere. Initial termination point- Spot where phone line running from outside at the TNI (Telephone Network Interface) first terminates. (Usually at a 42A block somewhere inside the house). 42A Block- 4 screw terminals where 4 conductor (2-line)wiring connects to. A 2-line phone jack can be connected to the 42A block, converting it from screw terminals to a modular phone jack. Twisted pair (also twisted copper pair)- A wire pair (twisted or not) consists of 2 wires: Ring (Negative polarity), and Tip (Positive polarity). The most common color wires are red (ring) and green (tip) representing line one. Yellow (ring) and black (tip) is line 2. In twisted pair wiring, each wire in a pair is twisted around each other, thereby making the pair self-sheilding, and resistant to electrical interference and RFI (Radio Frequency Interference). Half duplex- With half duplex, conversation or data transmition on the phone line only happens in one direction at a time. When transmitting or talking, you can't hear or receive. The opposite will hold true on the other end of the line at the same time. Receiver- In a phone handset, It's the speaker (earpiece). Transmitter- In a phone handset, It's the microphone (mouthpiece). Switch hook- A spring-loaded, momentary on/off switch which cuts off electrical current in the circuit inside the phone when the phone is hung up (on hook). TNI (Telephone Network Interface)- A grey rectangular box that is the final junction point where the phone company's wiring outside a house connects with a customer's phone wiring inside the house. At the TNI, a lineman's test set, or other phone, or telecom equipment can be connected up to the test jack on the customer access side of the TNI, or to screw terminals via alligator clips on the telco access side of the TNI for troubleshooting or other purposes. RJ11- 1-line phone jack or phone wire RJ14- 2-line phone jack or phone wire RJ25- 3-line phone jack or phone wire RJ45- 4-line phone jack or phone wire Cat 3 (Category 3) cabling- Phone wire optimized for running data transmitions (Modem, fax, etc.) over. It can transmit/receive data at speeds of 10 MegaBits Per Second. Cat 5 (Category 5) cabling- Similar to above, but can transmit and receive at faster speeds (100 MegaBits Per Second). Also, Cat 5 wire is usually only availible in RJ45 (4 pair) wiring. Enhanced Cat 5 cabling has transmit/receive speeds of 1000 MegaBits (or 1 GigaBit) Per Second. Such high speed wire connections is not normally needed for residential home Internet use. It's more geared toward businesses, offices, etc.