- #Crossover cable serial
- #Crossover cable driver
- #Crossover cable Patch
- #Crossover cable Pc
- #Crossover cable series
Received 605 broadcasts, 0 runts, 0 giants, 0 throttlesĠ input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abortġ661 packets output, 109224 bytes, 0 underrunsĠ output errors, 0 collisions, 7 interface resetsĠ output buffer failures, 0 output buffers swapped out Input queue: 0/75/0/0 (size/max/drops/flushes) Total output drops: 0ĥ minute input rate 0 bits/sec, 0 packets/secĥ minute output rate 0 bits/sec, 0 packets/secġ651 packets input, 107752 bytes, 0 no buffer Last clearing of "show interface" counters never Hardware is PQUICC with Fractional T1 CSU/DSU
#Crossover cable serial
At that point you can assign IP addresses to the serial interfaces and verify IP connectivity between the two WIC’s.īelow I have provided an example verification If the cable was made correctly the CD (Carrier Detect) LED should light up on both WIC’s. Once the cable has been successfully crimped on both ends you can test it out between two WIC-1DSU-T1’s.
Sometimes it’s easier to make the cable using certain colors in different spots.
#Crossover cable driver
Using a small flat head screw driver or pocket knife remove pins 3, 6, 7 and 8 from the jack so that it looks like this Īs for the color of the wires that go into pins 3, 6, 7 and 8 these can be any color you choose. You can make your very own T1 crossover for pennies on the dollar however you will need 2 RJ-45 jacks, some Cat5 cable and a crimper tool all of which can be picked up at your local hardware store such as Lowe’s, Home Depot, Ace Hardware, etc… (If you’re in the United States).Īnd now for a fun fact… The most common color you will see used for T1’s in the industry is either white or yellow.īefore you start, it’s a good idea to modify the RJ-45 Jacks a little bit.
#Crossover cable Patch
Unfortunately a simple ethernet cable will not magically make the WIC-1DSU-T1’s cards talk to each other because the pin-out schematic is different than a standard patch or crossover. The 1DSU cards can be cabled using standard unshielded twisted pair cable (Cat3, Cat5, Cat6, etc.) The difference between the WIC-1T and the 1DSU cards is that the 1DSU cards have an integrated DSU and does not require an external box to be connected via synchronous serial. Shown below is a picture of the WIC-1DSU-T1-V2 For the newer routers you’ll need the second generation card known as the WIC-1DSU-T1-V2 which can also be commonly found on eBay for under $10.00Īs for the WIC-1DSU-T1-V2, it will also work in the older routers with the latest Cisco IOS software.
#Crossover cable series
While the WIC-1T cards are extremely cheap, the DB60 DTE to DB60 DCE cables can cost anywhere between $5.00 to $15.00 each which can add up really fast in a lab that has more than 5 routers.Īnother common alternative is to use the WIC-1DSU-T1 which is dirt cheap and supported in the older Cisco 1700, 2600, 3600 series routers however WIC-1DSU-T1 is NOT supported in the newer ISR routers such as the 1800, 28 Series. The StarTech SCNM9FF is an example of a null modem cable.For years people have used the old and untrusty DB60 DCE to DB60 DTE cables to simulate WAN connectivity between Cisco Routers using WIC-1T modules and what I mean by untrusty is that these cables have a tendency to go bad after you move them around a lot in a lab environment. Null modem adapters can also be used at the end of a straight-through serial cable to cross the lines. For modern computers (ones from the year 2000 and on), crossover cables aren’t really needed anymore. It can connect other devices as well, provided both are of the same type for example, two switches, but not a computer and a switch. To enable handshaking between the two devices, the Request to Send (RTS) pin of one device must be connected to the Clear to Send (CTS) pin of the other device, and the Data Set Ready (DSR) pin is connected to the Data Terminal Ready (DTR) pin of the other. Crossover cables are a type of ethernet cable that is used to connect two computers together directly.
For this to work, the Transmit (TxD) pin of one device needs to be connected to the Receive (RxD) pin of the other device, and vice versa. Simple Null Modem CableĪ Null Modem or "crossover" cable is used to connect to DTE devices together. The StarTech MXT100FF is an example of a straight-through cable. The transmit and receive lines are not cross-connected in this case, hence the name. Simple Straight Through CableĪ straight-through or "one to one" cable is used to connect a DTE device (PC) to a DCE device (modem or other communications device).
#Crossover cable Pc
DTE normally refers to the serial port on a PC or terminal, while DCE refers to a modem or other type of communications device.ĭepending on the type of device on each end of the line, you either need a straight-through or a null-modem ("crossover") cable in order to communicate. The RS-232 specification defines two types of serial devices, DTE and DCE. Straight Through Serial CableĬrossover or "Null Modem" vs.
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