Lucent Technologies MERLIN LEGEND Release 6.1 Feature Reference page 477

MERLIN LEGEND Communications System Release 6.1
Feature Reference 555-661-110
Features
Messaging
UDP Features
Voice Messaging
Interface
In Release 6.0 and later systems (Hybrid/PBX mode only), messaging
features generally do not work across a private network. They only work
for extensions connected to the same system.
A user cannot turn a message light at a non-local dial plan extension off
or on. Only an integrated VMI port can turn a message light on or off
across a private network (Release 6.1 and later systems).
An operator cannot inspect the message status of an extension.
In Release 2.0 and later systems, when using the Return Call feature for
a voice messaging system, a call is returned to the voice messaging
system, not to the specific VMI jack that sent the message-waiting code.
Issue 1
August 1998
Page 428