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Page 384 of 504 Appendix C: Meridian Modular Telephones add-on modules installation
553-3001-367 Standard 3.00 August 2005
Operating parameters are downloaded after the MCA is enabled in LD 11.
System parameters are downloaded when the MCA is configured in LD 11,
and power is reset. See Software Input/Output: Administration
(553-3001-311) for prompt and response details.
Data parameters can also be set through LD 11, as well as by the keypad.
The MCA communicates with Data Terminal Equipment (DTE) using the
operating parameters shown below.
When using the MCA for synchronous data connections, configure the
telephone with a display option to view the data parameters. The MPDA and
MCA are supported on Meridian Modular Telephones only.
When installing an MCA or MPDA into NTZK or NT2K phone sets with a
date code prior to January 1998, a Power Option board is required, along with
an additional power source.
When installing an MCA in an NT9K or NT2K phone set with date code of
January 1998 or later, install only the MCA. An additional Power Option
board and Jumper board is not required. See Table 55: “NT2K model Power
requirements, Meridian Modular Telephone sets” on page 347 for power
requirements information.
• See Procedure 70 on page 393 for M2006/M2008 NTZK sets.
Synchronization Asynchronous, Start-Stop
Number of bits 8 bits
Parity none (unchecked)
Data rate 110, 150, 300, 1200, 2400, 4800, 9600,19200
bits per second (autobaud) asynchronous
up to 64000 bits per second synchronous
Stop bits 2 bits for 110 bits per second;
1 bit for all other speeds (asynchronous only)
Transmission Half duplex; full duplex