
DMA OperationsGuide  Polycom Solution Support
6Polycom, Inc.
•Size of Active Directory supported: 1,000,000 users and 1,000,000 groups 
(up to 10,000 groups may be imported) 
The following capabilities and constraints apply to each cluster in the 
supercluster: 
•Number of registrations: 15000 
•Number of concurrent H.323 calls: 5000 
•Number of concurrent SIP calls: 5000 
•Total number of concurrent calls: 5000 
•Number of network usage data points retained: 8,000,000 
•Number of IRQ messages sent per second: 100 
System Port Usage
Depending on signaling and security settings, the Polycom DMA system may 
have the following ports open: 
22 — SSH (if Linux console access is enabled) 
80 — redirects to 443 
443 — redirects to 8443 
8443 — management interface access 
8444 — superclustering administration 
4449 — OpenDJ replication (superclustering) 
5060 — unencrypted SIP (default port; can be changed) 
5061 — SIP TLS (default port; can be changed) 
1719 — RAS (default port; can be changed) 
1720 — H.225 (default port; can be changed) 
36000-61000 — H.245 port range 
Polycom Solution Support Polycom Implementation and Maintenance services provide support for 
Polycom solution components only. Additional services for supported third-
party Unified Communications (UC) environments integrated with Polycom 
solutions are available from Polycom Global Services and its certified Partners. 
These additional services will help customers successfully design, deploy, 
optimize, and manage Polycom visual communications within their UC 
environments.