Technical information

Other Products and Services
8-4 Issue 7 June 2001
Multipoint Conferencing Unit
(MCU)/Conference Reservation and
Control System (CRCS)
The MCU has a DEFINITY ECS-based architecture. The primary component of
the MCU is the Multimedia Server Module (MSM), which is similar to the most
basic version of the DEFINITY ECS Processor Port Network (PPN). MSM security
concerns are similar to those for the DEFINITY ECS (including, for example,
trunking, COR, and COS). Therefore, refer to the appropriate sections in this
document regarding the DEFINITY ECS for more information on MSM security.
The MCU system includes two possible adjuncts: the Expansion Services Module
(ESM) and the Conference Reservation and Control System (CRCS).
The ESM is a data conferencing module that communicates with the MSM. The
ESM does not provide network access and is therefore not a source of toll fraud;
however, the ESM requires proper password management on the part of system
administrators and users to preserve the functionality of the ESM.
CRCS is the automated conference reservation and control system for the MCU
product. CRCS is in part an extension of the DEFINITY SAT; therefore, once
CRCS is installed, CRCS server and client logins should be set with passwords
immediately. Also, ensure that CRCS is installed in a secure area or room that can
be locked.