Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
8. There are seven Port Modes as follows, Handshake, CM, Plain, ATT, ANSI, Through and Off.
Each of these Port Modes is described below.
Port Mode Description
1 Handshake The port is monitored for failures and performs AIS handshaking upon CM
(common module) failure or port failure.
2 CM * The port is monitored for failures. CM (common module) ports are connected to
the CM4s. A failure of the CM port is considered a failure of the entire node.
Ports which are considered as handshake will broadcast AIS until the port
configured as CM recovers (goes out of failure mode).
3 Plain The port is monitored for failures and has no other special attributes.
4 ATT The port is monitored for failures and conforms to AT&T standard TR54016 for
a CSU (Customer Service Unit) interface.
5 ANSI The port is monitored for failures and conforms to ANSI standard T1.403-1999
for a CSU interface.
6 Through The port is monitored for failures. All signaling of the corresponding “through
port” is passed through the port. There is no DS0 remapping and no regeneration
of framing. Requires Path Type to be LINE, and both ports in the link must be
set to THROUGH. This is a special configuration and is only used in some
repeater configurations.
7 Off The port is not monitored for failures. (See note on page 5-32)
* Used on port 5 and 6 when the M-DACS are used in a loop configuration with one or more of the
DACS module in ILS mode.
9. In T1 systems there are eight Line Buildout settings as follows: 0-133 ft, 133-266 ft, 266-399 ft,
399-533 ft, 533-655 ft, -7.5dB, -15 dB and -22.5 dB. These settings are used to accommodate
varying lengths of electrical connections for the DS1 link. For optical links use the 0-133 ft
setting.
10. There are two Gain Limit settings as follows: -15 dB and -36 dB. These settings are used to set a
maximum sensitivity of the electrical DS1 receiver. For optical links these settings are irrelevant.
M-DACS-T1 RFL Electronics Inc.
February 28, 2006 5-34 (973) 334-3100
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