RingMaster CB901

SYSTEM BUILD-UP

General Description

An existing Ring-Master CB901 system can be expanded by adding one or more STENTOFON AlphaCom E exchanges. The two systems are interconnected via data and audio links. Stations and equipment in both systems will interact as part of the same system. The AlphaCom E IP services can be accessed from the Ring-Master system.

Data
Data are transmitted via one or two serial RS232 links.

• One link (ETP, External Trunk Protocol) is used for station-tostation

calls, Group Call, Call Request and Caller ID.

• An optional link (SIO, Serial Input Output) is used for other

functions like Privacy information and Call Request camp on.

Audio
The audio interconnection between CB901 and AlphaCom E is analogue.

• There are 6 conversation channels in a 12 pair twisted cable

between each Interlink B board in CB901 and AGA board(s) in AlphaCom E.

Audio switching control (Duplex)
There is no transfer of switching control signals between the CB901 and AlphaCom E. The switching will take place individually in the Ring-Master station and in AlphaCom E.

Programming
The CB901-AlphaCom E interface features are programmed by use of:

• SVT for the CB901 part
• AlphaPro and AlphaWeb for the AlphaCom E part and the Ring-Master Daemon

Basic System Features

All internal features in both systems will remain as they are.
The following features will be included in the interface between CB901 and AlphaCom E:

• Station to station calling.

• Display information.
  Call number of calling station or station ID
• Simultaneous (global) All-Call and Group-Call.
  One global call at the time in the RM /ACE system.
• Call request and queuing from stations in CB901 to master stations(guards) in AlphaCom E.
  Calling stations will be camped on in one program distribution channel in CB901.

• Pocket paging.
  Automatic pocket paging in both systems. One individual serial ESPA 4.4.4. connection between AlphaCom E and the pager system; and CB901 and the pager system.
  The info in the pager display will identify the caller who has to be called back manually.

• Privacy.
  Stations in CB901 will be tested for privacy also when called from AlphaCom E. The subscriber board must be modified according to section 6.2

• Remote door opening.

AlphaCom E will generate a DTMF signal when a button is pressed in the AlphaCom station during conversation with the CB901 door station. This signal will be decoded by the remote output board DP997 inside the RM door station and used to activate the magnetic lock.