Polycom Welding System 3725-77601-001H Manual Do Utilizador

Polycom CMA System Operations Guide 

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Polycom, Inc.

Site topology information describes your network and its interfaces to other 

networks, including the following elements: 
• Site — A local area network (LAN) that generally corresponds with a 

geographic location such as an office or plant. A site contains one or more 

network subnets, so a device’s IP address identifies the site to which it 

belongs. 

• Network clouds — A Multiprotocol Label Switching (MPLS) network 

cloud defined in the site topology. An MPLS network is a private network 

that links multiple locations and uses label switching to tag packets with 

origin, destination, and quality of service (QOS) information. 
Note that MPLS clouds are not associated with an IP address ranges, so 

they can be used to group multiple subnets. They could also represent a 

service provider. 
While links to MPLS clouds have bandwidth and bit rate limitations, the 

cloud is infinite. In this way, clouds reflect the way in which businesses 

control bandwidth and bit rate. 

• Internet/VPN — A entity that represents your network’s connection to the 

public Internet.

• Site link — A network connection between two sites or between a site and 

an MPLS network cloud. 

• Site-to-site exclusion — A site-to-site connection that the site topology 

doesn’t permit an audio or video call to use. 

• Territory — A grouping of one or more sites for which a CMA system is 

responsible. 

The site topology you create within the CMA system should reflect your 

network design. Consider the following information and best practices when 

creating your site topology:
• If possible, connect all sites to an MPLS cloud. MPLS clouds are like 

corporate networks, used to connect multiple subnets in multiple sites, but 

all servicing a company. 

• Avoid cross loops or multiple paths to a site; otherwise a call may have 

different paths to a single destination. The more cross, circular, and multi 

paths you have, the higher the number of calculations for a conference.

• Link sites that aren’t connected to an MPLS cloud directly to another site 

that is connected to an MPLS cloud. Do not create orphan sites.

• Calls are routed through a bridge, so bandwidth and bit rate limits for the 

site and subnet apply to all calls made using that bridge.

• Reserve the Internet/VPN “site” for IP addresses that fall outside your 

private or corporate network (for example remote workers), because all 

calls routed to the Internet/VPN site will be routed through the site on 

your private or corporate network that has Internet access.