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Digium, Inc.
Page 27
Chapter 2: Card Installation
Figure 7: Ident Wheel
Connecting Timing Cables
The timing port allows up to four TE200 Series cards to share the same
sync (timing) source from the T1 line provider, or provide a consistent
sync source across multiple cards. This is a useful feature for data and fax
modes and some voice applications to prevent corruption due to timing
slips on the second, third or fourth TE200 Series cards.
To utilize this feature, daisy-chain the P1 connector between each TE200
Series card using the Digium 4-position timing cable. See Figure 8 on
page 28 for an example. Enable this feature in the drivers using the
timingcable=1
switch when the drivers are loaded:
# modprobe wct2xxp timingcable=1