Nortel NT1R20 Description page 200

Page 176 of 290
Figure 40
Set Mode (S M): <CR> screen
LEI:>S M
1)
Default
2)
Table
Hit <CR> to accept current value or type in a new one.
Current Mode : 1
Signaling Bits set to Default.
LEI:>
553-3001-105 Standard 5.00 June 1999
NT5D33 and NTRB34 Line-side E1 Interface Cards
Set Mode
At the SET MODE (S M) command, the MMI will prompt the user with
the current signaling mode, either Default (Australian P2) or Table (of bit
values.) Entering a <CR> will accept the current value, (see Figure 40,) or
the user can type in 1 to revert to the Default, or 2 to edit the table entries. If
the user selects default, then the A/B Bit values will be reset to the Default
values.
New Mode :
Responding to the MMI's Set Mode prompt with "1" will also result in
the line, "Signaling Bits set to Default," much as in Figure 40.
However, responding to this prompt with 2 selects "Table" and allows the
user to set the A/B Bit Mode to whatever configuration the user chooses. If
"Table" is selected, the individual table values will be prompted for, see
Figures 41 and 42. After each value is displayed the user can enter <CR> to
accept the current value, enter just the AB bits (which will be copied to the
CD bits), enter a complete ABCD bit pattern, or, in the case of optional states,
a 'N' or 'n' can be entered to indicate that the state is not needed. Note that
in D4 Framing for E1, there are no CD bits so they will be ignored. The user
will be prompted for ABCD bit values for the following states when the table
mode is selected. Send and Receive refer to the LEI sending ABCD bits to the
CPE (Customer Provided Equipment) or receiving ABCD bits from the CPE.
Incoming and Outgoing refer to E1 digital link from the CPE point of view.
Incoming is thus an external call arriving over the digital link and accepted
by the CPE. Outgoing is a call originated by the CPE over the digital link.
Configuring the A/B Bit Signaling table is illustrated in Figures 41 and 42.