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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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RJ45 for Phone Line
I have a jack in my bedroom where I want to run both an ethernet connection
and a phone line. I have a modular jack and I can only find RJ45 connectors for it. Can I use an RJ45 connector for the phone line using regular phone cable that I bought at Home Depot? Any details would be appreciated. |
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In article vMs_c.249879$Oi.155876@fed1read04,
"Buck Turgidson" wrote: I have a jack in my bedroom where I want to run both an ethernet connection and a phone line. I have a modular jack and I can only find RJ45 connectors for it. Can I use an RJ45 connector for the phone line using regular phone cable that I bought at Home Depot? Any details would be appreciated. Yes. It was intended to be used that way. Use the middle four connections (3, 4, 5, 6) just as you would the four connections of an RJ-11 (1, 2, 3, 4). An RJ-11 plug will fit right in, and work just fine. You can use the other two pairs (1,2, 7,8) for ethernet at the same time, if you use an adapter to move the signals to the appropriate pins. (1, 2) should go to the same pins; (7, 8) moves to (3, 6). Isaac |
#3
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In article ,
Isaac Wingfield wrote: In article vMs_c.249879$Oi.155876@fed1read04, Can I use an RJ45 connector for the phone line using regular phone cable that I bought at Home Depot? Any details would be appreciated. Yes. It was intended to be used that way. Doing so will damage the jack. The best thing to do is to make an RJ-45 plug to Rj-11 plug patch cable wired as above. Geoff. -- Geoffrey S. Mendelson, C.T.O. GW&T Ltd., Jerusalem Israel IL Voice: 972-544-608-069 IL Fax: 972-2-648-1443 U.S. Voice: 1-215-821-1838 |
#4
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Geoffrey S. Mendelson wrote:
In article , Isaac Wingfield wrote: In article vMs_c.249879$Oi.155876@fed1read04, Can I use an RJ45 connector for the phone line using regular phone cable that I bought at Home Depot? Any details would be appreciated. Yes. It was intended to be used that way. Doing so will damage the jack. The best thing to do is to make an RJ-45 plug to Rj-11 plug patch cable wired as above. Geoff. .... and don't use regular phone wire for ethernet. Buy special (CAT 5) cable for Ethernet. (Cat 5 cable can be used for plain old telephone if you wish.) |
#5
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"Buck Turgidson" schreef in bericht news:vMs_c.249879$Oi.155876@fed1read04... I have a jack in my bedroom where I want to run both an ethernet connection and a phone line. I have a modular jack and I can only find RJ45 connectors for it. Can I use an RJ45 connector for the phone line using regular phone cable that I bought at Home Depot? Any details would be appreciated. First: RJ45 is a well defined standard in a telco environment. It describes signal names and wires used on a 8p8c minimodular plug/jack. So using the name RJ45 in an network environment is misleading. It is about the same common error like using RS232 for a DB25 or DB9 connector. Then: Wiring the 8p8c connectors for ethernet is deliberatly "standardised" on using the pins 1, 2, 3 and 6. By plugging a ethernet cable into a telephone outlet you avoid to connect it to the wires of the pins 4 and 5 which can carry pretty high telephone voltages, fatal for ethernet equipment. Wiring one 8p8c outlet for both telephone and ethernet can be done but you have to use cat 5 UTP cable, at least fot the ethernet part. You can use the same cable for telephone if you wish, but you can't use plain telephone cable for the ethernet part. Not reliably. Somewhere outside the outlet you have to split the cable. Where I live they are for sale in any DIY shop where it is named ISDN splitter. petrus bitbyter --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.740 / Virus Database: 494 - Release Date: 16-8-2004 |
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