Nortel Meridian 1 Description page 93

• Data tandem calls across tie trunks, provided all switches involved are
Nortel Networks machines
• PSDS tandem data calls across tie trunks are supported with release 18
or later when each tandem node uses an ISDN Primary Rate Interface
(PRI) or Basic Rate Interface (BRI) connection. See Transparent Data
Networking (553-2731-110) for more information.
Note: Internal PSDS calls are not supported.
MCA operating parameters
The MCA data parameters are stored locally although the configuration is set
in the Meridian 1 system. Data parameters may not be set in the system before
installing the MCA in the telephone. If the parameters are set before the
telephone is installed, the configuration information will be lost.
Operating parameters are downloaded after the MCA is enabled in LD 11.
With release 18 and later, system parameters are downloaded when the MCA
is configured in LD 11, and power is reset. (See the X11 Administration
(553-3001-311) for prompt and response details.) Data parameters can also
be set, with release 18 and later software, through LD 11, as well as by the
keypad.
Meridian 1 Telephones Description and Specifications
Data options Page 93 of 104