Digium, Inc.
Page 28
Chapter 2: Card Installation
Figure 7: Ident Wheel
Connecting Timing Cables
The timing port allows up to four TE400 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 TE400 Series cards.
To utilize this feature, daisy-chain the P1 connector between each TE400
Series card using the Digium 4-position timing cable. See Figure 8 on
page 29 for an example. Enable this feature in the drivers using the
timingcable=1
switch when the drivers are loaded:
# modprobe wct4xxp timingcable=1
