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Pitfalls Between Remote Site and Managed Ethernet Networks

When connecting MP card, IP-PAD cards or IP telephones to Ethernet switches that support STP, Spanning Tree Protocol (IEEE 802.1d)and LACP, Link Aggregation Control Protocol (IEEE 802.3ad), there is a strong possibility that communications will be disrupted. Ensure that both of these features are deactivated on Ethernet switches.


The following are examples of conflict with these features:

IP telephones fail to connect to the PBX.

Calls between IP telephones cannot be made.

Calls between IP telephones and legacy telephones or trunk cannot be made.

With Remote PIM over IP the Remote site does not operate in Normal mode.