Fiber/FDDI/etc...
SC - two fibers in one plug (side by side)
ST - 1 fiber in single plug
Took the following from a
Netoptics page. Go there if you want to buy some cables, taps,
test equip, converters, bypass switch, attenuators, LAN, Simulation
Boxes, etc....
DB9
(looking at male)
1<->5
6<->9
(looking at female)
5<->1
6<->9
DB15
(looking at male)
1<->13
14<->25
(looking at female)
13<->1
25<->14
T1
RJ45
====
1 - T1 (tip1)
2 - R1 (ring1)
3 - null
4 - T2 (tip2)
5 - R2 (ring2)
6 - null
7 - null
8 - null
Generally, things are connected from network (CO, switch, etc.)
to user (Terminal equipment, VRU, router, etc.). If you need to connect user
to user or network to network, you need to cross wire 1<->4 and 2<->5.
RS-232
DB-25 Signal Std Null
===== ====== === ====
2 TX YEL RED
3 RX RED YEL
4 RTS BLU GRY
5 CTS GRY BLU
6 DSR BRN BLK
7 GND GRN GRN
8 CD ORG ORG
20 DTR BLK BRN
Null Modem
Pin Sig Std Null
=== === === ====
2 TX YEL \/ RED
3 RX RED /\ YEL
4 RTS BLU \/ GRY
5 CTS GRY /\ BLU
6 DSR BRN \/ BLK
20 DTR BLK /\ BRN
7 GND GRN -- GRN
8 CD ORG -- ORG
The following section was originally taken from the:
Data Communications Cabling FAQ - 24 Oct 1998 15:13:12 GMT
...it's been modified since than...
9.1 Standard EIA/TIA T568A
(also called ISDN, previously called EIA)
Pin Wire Color
=== ==========
/--T3 1 White/Green
Pair3 \--R3 2 Green
/----------T2 3 White/Orange
/ /-R1 4 Blue
pair2 \ pair1 \-T1 5 White/Blue
\----------R2 6 Orange
/--T4 7 White/Brown
pair4 \--R4 8 Brown
9.2 Standard EIA/TIA T568B
(also called AT&T specification, previously called 258A)
/--T2 1 White/Orange
pair2 \--R2 2 Orange
/----------T3 3 White/Green
/ /-R1 4 Blue
pair3 \ pair1 \-T1 5 White/Blue
\----------R3 6 Green
/--T4 7 White/Brown
pair4 \--R4 8 Brown
9.3 USOC (Universal Service Order Code)
8-pins 6-pins
| |
/-------------T4 1 White/Brown
/ /---------T3 2 1 White/Green
/ / /-----T2 3 2 White/Orange
/ / / /-R1 4 3 Blue
pr4\ pr3\ pr2\ pr1\-T1 5 4 White/Blue
\ \ \-----R2 6 5 Orange
\ \---------R3 7 6 Green
\-------------R4 8 Brown
------------------------------
Subject: 10.0 Birds and Bees (Plugs vs. Jacks)
The EIA/TIA specifies an RJ-45 (ISO 8877) connector for Unshielded
Twisted Pair (UTP) cable. The plug is the male component crimped
on the end of the cable while the jack is the female component in
a wall plate or patch panel, etc. Here is the pin numbering to
answer the question, where is pin one?
Plug Jack
(Looking at connector (Looking at cavity
end with the cable in the wall)
running away from you)
---------- / ----------
| 87654321 | | 12345678 |
|__ __|/ |/_ /_|
|____| |/___|
------------------------------
Subject: 11.0 Standard Networking Configurations
With reference to T568B above;
ATM 155Mbps uses pairs 2 and 4 (pins 1-2, 7-8)
Ethernet 10Base-T uses pairs 2 and 3 (pins 1-2, 3-6)
Ethernet 100Base-T4 uses pairs 2 and 3 (4T+) (pins 1-2, 3-6)
Ethernet 100Base-T8 uses pairs 1,2,3 and 4 (pins 4-5, 1-2, 3-6, 7-8)
Token-Ring uses pairs 1 and 3 (pins 4-5, 3-6)
TP-PMD uses pairs 2 and 4 (pins 1-2, 7-8)
100VG-AnyLAN uses pairs 1,2,3 and 4 (pins 4-5, 1-2, 3-6, 7-8)
------------------------------
Subject: 12.0 Ethernet 10Base-T Cabling
12.1 Ethernet 10Base-T Straight Thru patch cord (T568B colors);
RJ45 Plug RJ45 Plug
========= =========
/--T2 1 ... White/Orange .... 1 TxData +
pair2 \--R2 2 ... Orange .......... 2 TxData -
/----------T3 3 ... White/Green ..... 3 RecvData +
/ R1 4 Blue 4
\ pair3 T1 5 White/Blue 5
\----------R3 6 ... Green ........... 6 RecvData -
T4 7 White/Brown 7
R4 8 Brown 8
12.2 Ethernet 10Base-T Crossover patch cord; (also works for 100Base-T)
This cable can be used to cascade hubs, or for connecting
two Ethernet stations back-to-back without a hub (ideal for
two station Doom!) Note pin numbering in item 10.0 above.
RJ45 Plug 1 Tx+ -------------- Rx+ 3 RJ45 Plug
2 Tx- -------------- Rx- 6
3 Rx+ -------------- Tx+ 1
6 Rx- -------------- Tx- 2
1000Base-T or faster
RJ45 Plug 1 -------------- 3 RJ45 Plug
2 -------------- 6
3 -------------- 1
4 -------------- 7
5 -------------- 8
6 -------------- 2
7 -------------- 4
8 -------------- 5
12.3 Ethernet 10Base-T to USOC Crossover patch cord;
RJ45 8-pin Plug 1 ---White/Orange--- 2 USOC 6-pin Plug
^ 2 ------Orange------ 5 ^
3 ---White/Green---- 1
6 ------Green------- 6
Category 1 = No performance criteria
Category 2 = Rated to 1 MHz (used for telephone wiring)
Category 3 = Rated to 16 MHz (used for Ethernet 10Base-T)
Category 4 = Rated to 20 MHz (used for Token-Ring, 10Base-T)
Category 5 = Rated to 100 MHz (used for 100Base-T, 10Base-T)
Category 5e= Rated to 100 MHz (used for 100Base-T, 10Base-T, better crosstalk characteristics)
Category 6 = Rated to 250 MHz
Category 6A= Rated to 500 MHz (used for 10GBase-T at 100 meters)
21.1 ISDN U-loop
ISDN Basic Rate Interface (BRI) is provided by a carrier from
a central office (CO) switch to the customer premise with a
two wire U-loop RJ-45 connector on the center pins 4-5.
RJ45 Plug
=========
1 N/C
2 N/C
3 N/C
4 U-loop network connection
5 U-loop network connection
6 N/C
7 N/C
8 N/C
21.2 ISDN Network Termination (NT)
The Network Termination is a Power Supply and NT1. In North
America this functionality can be provided in the terminal
equipment (i.e. ISDN digital modem) or separate as follows;
________ ________
| Power | | |========== TE
=========| Supply |============| NT1 |
U-loop |________| U+PS2 |________|======== S/T bus
2-wire 4-wire 4-wire
RJ45 Plug for U+PS2
===================
1 N/C
2 N/C
3 N/C
4 U-loop network connection
5 U-loop network connection
6 N/C
7 -48 VDC
8 -48 VDC Return
RJ45 Plug for ISDN S/T bus
==========================
1 N/C
2 N/C
3 White/Green ..... Receive +
4 Blue ............ Transmit+
5 White/Blue ...... Transmit-
6 Green ........... Receive -
7 White/Brown ..... -48VDC (option)
8 Brown ........... -48VDC Return (option)