MultiModule
From Zenitel Wiki
The STENTOFON AlphaCom E MultiModule function makes it possible to increase the capacity of an exchange by adding up to four AlphaCom E exchange cabinets together in a master-slave configuration. The multi-module exchange acts as one node with full integration of all features. In some documents multi-module is refered to as InterCardCage, ICC.
All configuration data are stored on the AMC-IP board in the master module. The master module controls the resources in the slave modules using the ICC Protocol.
Contents
MultiModule or AlphaNet?
In general MultiModule is recommended when the modules are located in the same room, and the purpose with the additional modules is to extend the line capacity. A MultiModule system being a part of an AlphaNet is seen as a single node.
AlphaNet is recommended when modules are located apart from each other, in different floors, building or cities. In AlphaNet each module is a stand-alone exchange.
Autonom mode
The multi-module exchange supports redundancy mode. In case of master-slave communication error, the slave module will fallback to work as an individual exchange serving calls between stations connected directly to the exchange module. The AMC Master can be set to copy its content to the slave modules over a 28 hour period. In AlphaPro, Exchange & System > System > Calls & Options, set the flag "Autonom Mode: Copy NVRAM".
Module interconnections
IP network - VoIP
When using MultiModule over IP no additional AlphaCom hardware required. MultiModule licenses are required for each AlphaCom E module. Conversations between modules are point to point, and not in a ring as in traditional MultiModule using AGA or AE1 boards.
The modules should be on the same LAN, as MultiModule uses fixed jitter buffer size of 10 ms
Cabling
The modules are connected via a single Ethernet cable. Two modules can be connected back to back. A straight cat5 ethernet cable can be used. With three or four modules an ethernet switch is required.
Programming
Perform a cold start of each module separately
- AlphaWeb:<br\>::- Assign an IP Adress to each module<br\>::- Enter thelicense key to enable the VoIP channels
AlphaPro:<br\>::- Enter the IP adress of the slave modules.
E1 link - AE1
Analog links - AGA
Limitations in Slave Modules
Slave modules support analogue stations only, no other types of inputs or outputs. The slave modules do not support: