Autobaud And Autoparity; Mca Flashing Led - Nortel Meridian SL-100 Reference Manual

9-2 Hayes keyboard dialing
Figure 9-1xxx

MCA flashing LED

RS-232-C Interface
Flashing LED
Hayes commands can be issued only when the MCA is in this state. When
you are in the Hayes keyboard dialing state, the MCA returns to the
command state after each command line is entered and after a call is
completed.

Autobaud and autoparity

The parameter, S66 register, determines how autobaud and autoparity
characters are interpreted. S66 allows Hayes compatible software packages
to execute without inadvertently entering the Nortel (Northern Telecom)
KBD state. The S66 default setting (the state which is active each time the
autobaud state resumes) is originally determined by the KBDTYPE field
within the MCA operating parameter download. Selecting Hayes in the
download clears the S66 register while selecting KBD sets it. This register
can also be manipulated with regular AT commands or with the P66
command from the keypad.
Note: A change made with the P66 command changes the default setting
while a change made with AT commands does not.
Parameter S66 register (nonzero)
If the S66 register contains a nonzero value (Nortel KBD), the autobauding
operates as follows:
555-4001-114 Standard 10.02 November 1999
If a carriage return (0DH) is entered followed by a period (2EH) and
another carriage return (0DH), the Nortel KBD becomes active.
Autobaud and autoparity are performed.