# Genesys Quality Management Suite 8.1.520 : Sizing Implications

Genesys Quality Management Suite communicates with the Communication Manager by exchanging messages via the Avaya Application Enablement Service (AES). The number of messages the infrastructure can handle is limited by several factors:

- Number of messages CM can handle
- Number of messages AES can handle
- Number of CLAN cards, installed in the system (= GW limit)
- Number of messages single C-LAN card can handle
- Connection speed between CM and AES server

Number of communication messages each C-LAN card is able to handle:

- On the TN799 DP CLAN Board or when Processor Ethernet is deployed, the Board Limit is 200 messages per second to the Avaya Communication Manager and 240 messages per second from the Avaya Communication Manager.
- In order for an AE Server to support 1000 Messages per Second (mps) it must be provisioned with at least five CLAN Boards (1000/240=4.2).
- In order for an AE Server to support 720 Messages per Second (mps) it must be provisioned with at least three CLAN Boards (720/240=3).

Number of connections to C-LAN:

- C-LAN card is limited to 500 sockets. Different types of communication utilize different number of sockets.
- Avaya best practice states that no more than 250 phones should be connected to it when another Gateway or adjunct is connected to it.
- Another recommendation states not to use more than 600 IP Phones on single system, using just 3 C-LAN cards.
- By doing this you will have spare capacity in case of network failure to a certain C-LAN or hardware issues, and you may even use C-LAN priorities.