Zhone Technologies IMACS-200 - Manual (Page 154)

6-6 FXS Ports
Model No. Running Head
PATTRN
The Pattern field selects an outgoing test pattern for the current port. The test pattern is
generated by the system and sent to the selected port. You can select a different pattern for
each port. The none option disables the test pattern. The D-mW (Digital milliwatt) option
sends a 1 kHz tone at 0.0 dBm. The setting of the Rx TLP setting affects the D-mW signal
level.
SIG CONV
The Signaling Conversion parameter allows you to change the transmit ABCD signaling bits
from CCITT (E1) to ANSI (T1) standards, and is accessd by selecting B from the taBs option
at the bottom of the window.
The options are off if ANSI signaling is used and on to convert transmit signaling from ANSI
to CCITT format according to the Interface Card Conversion Table for FXS signaling. This
setting also converts receive signaling from CCITT to ANSI. To see the options currently
deployed on a port, Figure 6-3 shows the default settings for the conversion table. This table
will be commonly used by all ports to which the this option is set to on.
The C->A column describes conversion done in the downstream direction towards the
subscriber loop, while the A->C column describes the conversion done in the upstream
direction, normally towards the T1 interface.
Figure 6-3.TABs Signal Conversion