Call flows

Last Updated : Oct 19, 2015 |
Prolog information
The IP Office centralized solution revolves around SIP endpoints at a branch location that registers to a Session Manager. Local trunking is provided through the IP Office at the branch location. When connectivity to the Session Manager is lost, the SIP endpoints failover and register to the IP Office for connectivity.

Solution overview

Figure: Solution overview showing the store network
The Solution overview illustrates the store network.
  • CM-1 represents a Communication Manager used for features for the store phones.
  • CM-2 represents the primary Communication Manager used for corporate endpoints and PSTN trunking.
  • SM represents all Session Managers.
There must be at least:
  • 1 or more Communication Managers
  • 1 or more Session Managers
  • 1 or more IP Offices
  • SIP endpoints at each branch location