Question about Cisco router cable, DB-60 male to V.35 male, verified to V.35 Standard, 3 meters long (721004)

1 Answer

V.35 Cable Local Loop

For test the V.35 cables and the Wic1T, i need to make a physical local loop (B3) with a V.35 cable. With the V.35FC cable there is no problems, looping this pins:
J2·C-->J2·D (RTS-->CTS)
J2·E-->J2·H (DSR-->DTR)
J2·P-->J2·R (SD+-->RD+)
J2·T-->J2·S (RD- -->SD-)

the result is that the interface serial changes to looped status.
but the same procedure on the V.35MT cable don´t make the loop.
¿Any solution?Thanks!
V.35 pinouts:
http://www.cisco.com/en/US/products/hw/routers/ps133/products_tech_note09186a00801f5d8e.shtml

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 1 Answer

If your trying to establish a loopback for the Data Terminal Equipment, you seem to have satisfied the RTS/CTS, DTR/DSR loopback. At the V.35 end of your cable, you need to loopback the SD (balanced pairs) to the RD (balanced pairs), as well as insure that you have a valid clock source. Usually the DCE provides clock on a balanced pair SCT, SCR. towards the DTE. But, when you build a loopback cable or adapter, you can obtain clock from the DTE via the SCTE pair and tie it to the SCT and SCR balanced pairs. A lot of the requirements depend upon the DTE and DCE equipment your testing. Hope this helps...

Posted on Mar 11, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

Switch to Switch Connection


This is a very specific problem that requires a site visit to solve, there are many factors that can effect the transmission of data over a run of that length. There are many solutions to this problem, they range from rerouting the cable run to avoid sources of interference to selecting another medium such as WLAN or IrLAN. The specific implementation of the solution must be custom tailored to the situation, sometimes the solution requires equipment that is readily available on a store shevle and sometimes the solution must be engineered to accommodate the needs.

I would recommend looking at the cable route to see if it runs past any major interference makers (copiers/large office machines, industrial equipment, power equipment). Then look at the possibility of an intermediate repeater/router (protected location and availability of power outlets). Another possibility is a wireless technology, the specific technology depends on many factors. If you need high speeds or large data transfer, perhaps an Ir (Infra-red) link or WiMAX (802.16) would be best. If general purpose network connectivity is needed, then a standard 802.11 a/g WLAN will suffice. I recommend that you contact a local networking firm for a detailed consultation. Another resource that might be a better fit for most small budgets will be to contact the local college/university that has a well defined IT program to solicit members of the Alumni in a networking degree field.

Jan 06, 2009 | D-Link Network Accessories

1 Answer

I want to establish a local area network. my question is, what should be the maximam lenth of cat5 cable between switch to computer???


The maximum length (maximum certifiable length) for CAT 5 patch or crossover cables is 328 feet (100 meters). Beyond that, you run the risk of signal loss and other complications.

Dec 29, 2008 | Network Accessories

1 Answer

How to make my DSL faster by higher speed?


I would start by looking at the wiring in the house (from plug in the wall to the Demarcation line) make sure that is high quality wire and good connections. Then move to the Phone Co., get them to inspect the local loop wiring for bad connections/wire. Then move to FiOS (fiber optic technology), this will produce some amazing speeds, but you have to work with the phone co. or move to a faster technology such as Frame Relay, ATM, or ISDN, a burst asynchronous comm is your best bet.

Dec 26, 2008 | Monster Cable (109611)

1 Answer

How to connect 2 PC at a time one of the PC has internet connection i want to communicate both PC I have windows XP sp2?


You can use hub for that matter. Use RJ-45 Cables (Crossover) for connecting just two computers and connect each unit with the cable inserted from your cpu to the hub. To create an RJ45 local area network in Windows, you will need: Several computers running Windows (computers running two different versions of Windows can be part of the same network);
Ethernet cards on a PCI or ISA port (with an RJ45 plug) or built into the motherboard. When applicable, make sure the diodes on the back of the network card light up when the computer is on and that a cable is plugged in.

Dec 23, 2008 | 10 10 Computer 1000 ft. Stranded Wire...

1 Answer

Crossover cable


Unless you have the proper cable crimper for making network cables, it would be faster and easier to just hop down to your local computer store, or even Walmart/Target and buy one.

If you do have the tool and want to make one from scratch, follow the steps listed below.

NOTE: Only two pairs of wires in the eight-pin RJ-45 connector are used to carry Ethernet signals. Both 10BASE-T and 100BASE-T use the same pins, a crossover cable made for one will also work with the other.

*Note: Even though pins 4,5,7, and 8 are not used, it is mandatory that they be present in the cable.

The combination for the pins is:

Connector 1: Pin1 to Connector 2: Pin3
Connector 1: Pin2 to Connector 2: Pin6
Connector 1: Pin3 to Connector 2: Pin1
Connector 1: Pin6 to Connector 2: Pin2

Cheers,

Keith

Dec 08, 2008 | Avaya 9 ft. Crossover Cable...

1 Answer

A/V cable for Vextra Photo Frame


Marvw50,

They mean one of these:
http://www.uuzip.com/6-Ft--Shielded-Cable--1-8--Plug-to-RCA-Plug_product_3897551.html

Very inexpensive...if you dont want to wait, im sure your local Radio Shack type store would have one in stock...but at a much higher cost :-)

Hope this helped,
Jem

Nov 16, 2008 | Vextra Cat5e (V6C5E)

4 Answers

Transfering data from one computer to another


I think there is no way to do that. You CAN do it, however, with a crossover cable. It looks the same as a regular cable, but it's not. With the crossover cable, just connect the two computers and give 'em two IP's in the same network. Then enable file sharing and it should work. Sorry, I can't go into much detail because I haven't done that in a looong time, but I think that's about it. Hope it helps.

Sep 11, 2008 | Cat5e Network Accessories

1 Answer

How to run cat5 for phone wire


You could, but common practice is to make all the runs "home runs". Pick a closet or basement or some centrally located place and run all the cables to that spot. Then you can use a $10 block from Blowes Home Dumpo Maynards and create a distribution point.

Carl

Aug 21, 2008 | Network Accessories

2 Answers

Connecting a pc to a laptop


Have checked the IP address both should be in the same class like 192.168.1.1 and 192.168.1.2

after setting the IP address
go to run type ping 192.168.1.1 or 2 each other to ensure they are talking propely.

check the serviceability of crossover cable also.

Apr 19, 2008 | Cat5e 100 Foot Shielded STP 350mhz Network...

Not finding what you are looking for?
Network Accessories Logo

Related Topics:

4,553 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cisco Network Accessories Experts

Brian Sullivan
Brian Sullivan

Level 3 Expert

27725 Answers

Les Dickinson
Les Dickinson

Level 3 Expert

18304 Answers

Cindy Wells

Level 3 Expert

4761 Answers

Are you a Cisco Network Accessory Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...