Term used improperly

Thank you for taking the time to compile the Cabling Installation & Maintenance 1997 Buyer`s Guide, which will be a useful tool for completing everyday tasks. However, one thing in the product tables bothers me: the improper use of the term "RJ-45" when referring to an 8-pin modular jack or plug.

Thank you for taking the time to compile the Cabling Installation & Maintenance 1997 Buyer`s Guide, which will be a useful tool for completing everyday tasks. However, one thing in the product tables bothers me: the improper use of the term "RJ-45" when referring to an 8-pin modular jack or plug.

The term RJ-45 does not appear anywhere in the tia/eia-568a standard. The RJ stands for "registered jack" and was first coined by the local operating telephone company. Although several RJ-45s are listed in the registration books, none have pin/pair assignments such as those required for the T568A and T568B jacks used for high-speed-data local area networks. However, both the RJ-45s and the T568A and T568B jacks use 8-pin modular jacks and plugs.

For 15 years, this term has been used improperly throughout the industry. Now that we have standards such as tia/eia-568a, eia/tia-569 and -570, and tia/eia-606, I would like to see people use the correct terminology. If we keep calling these jacks RJ-45s, we will continue to pass on incorrect information. By using the proper terminology, we can teach old dogs new tricks.

Timothy J. Murphy, rcdd

Apex Communications Inc.

Sunnyvale, CA

More in Cabling Installation