Ref: 14980004
Title: Token Ring Cable Specifications
Date: 8-30-89

Copyright 3Com Corporation, 1991.  All rights reserved.

The following is a description of the various types of IBM Token
Ring cabling:

Type 1 Data Cable:

Two twisted pairs of No. 22 AWG solid conductors for data
communications are enclosed in a braided cable shield covered
with an appropriate sheath.  For non-plenum use only.

Type 1 Outdoor Data Cable:

Two twisted pairs of No. 22 AWG solid conductors for data
communications enclosed in a corrugated metallic cable shield
with appropriate sheath.  Type 1 outdoor cable is appropriate for
aerial installation or for placement in underground conduit.

Type 1 Plenum Data Cable:

Two twisted pairs of No. 22 AWG solid conductors for data
communications are enclosed in a braided cable shield covered
with an appropriate sheath.

Type 2 Data & Telephone Cable:

Two twisted pairs of No. 22 AWG solid conductors for data
communications are enclosed in a braided metal cable shield.
Also included inside the cable jacket are four additional pairs
of No. 22 AWG solid conductors for telephones.  For plenum use
only.

Type 2 Data & Telephone Plenum Cable:

Two twisted pairs of No. 22 AWG solid conductors for data
communications are enclosed in a braided metal cable shield.
Also included inside the cable jacket are four additional pairs
of No. 22 AWG solid conductors for telephones.

Type 3:

Two twisted pairs of No. 22 or No. 24 AWG solid copper wire.
Minimum two twists per foot, Maximum 28.6 OHMS.

Type 5 Fiber Optics Cable:

Two 100/140 micron optical fibers.  Type 5 cable is suitable for
indoor, non-plenum installation or outdoor aerial installation or
for placement in dry, waterproof underground conduits.

Type 6 Data Cable:

Two twisted pairs of No. 26 AWG stranded conductors for data
communications.  Flexible for use in making patch cables.
Available for non-plenum application only.

Type 8 Data Cable:

Two parallel pairs of No. 26 AWG solid conductors for data
communications.  Type 8 cable is for use only under carpeting.

Type 9 Plenum:

Two twisted pairs of No. 26 AWG solid conductors for data
communications.
