Signaling Conversion Table Screen - Zhone IMACS 8000 User Manual

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Interface Card User Screens and Settings
8.3.3

Signaling Conversion Table Screen

Signaling conversion is required when cross-connecting a T1 (ANSI) voice circuit to E1
(ITU-T). This process translates the sequences of the ABCD signaling bits to allow proper
signaling between the two carrier types.
You can set up signaling conversion for all types of voice circuits from the Signaling
Conversion Table Screen, which is shown in Figure 8-8
Interface Card Main Screen (taBs command).
You can accept the default bit pattern changes, or you can set a different ABCD signaling bit
pattern and insert it in the table. Each voice circuit type is represented by two columns that
correspond to ITU-T to ANSI conversion (C->A) and ANSI to ITU-T (A->C) conversion.
For example, an E&M circuit in the "0101" state (shown in the far-left ABCD column of the
screen) will send 0101 as the ABCD bits from the ITU-T end of the circuit. The ANSI end will
receive and convert those bits to 1111. In the opposite direction, the signaling bit sequence will
be sent as 1111 from the ANSI end and converted to 0101 at the ITU-T end. However, you can
manually override the received ABCD bit pattern at either end.
8-18
Figure 8-8.Signaling Conversion Table Screen
Interface Card
. To go to that screen, press "b" in the
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Model No.
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