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  • An incoming call to a specific number (for example +1-80-41774568) is forked to both the AORs (for example AOR1:+1-80-41774568 and AOR2: sip:bob@sonusnetexample@sonusnet.com) simultaneously via PBX1 and PBX2.
  • Both the AORs belong to different call servers. These two devices are handled by the redundant call servers.

  • In the below scenario, the SBC forks the call to routes R11 and R21. If the call does not complete through route R11, The SBC crack crack back the call through route R12 to complete the process. The routes R11 and R12 contain the egress INVITE R-URI as +1-80-41774568 and the routes R21 and R22 contains the egress INVITE R-URI as sip:bob@sonusnetexample@sonusnet.com.
    Figure 3: Redundant Call Servers - Different AORs

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  • An incoming call to a specific number (for example +1-80-41774568) is forked to both the AORs (for example AOR1:+1-80-41774568 and AOR2: sip:bob@sonusnetexample@sonusnet.com) simultaneously via PBX1 and PBX2.
  • Both the AORs belong to different call servers. These two devices are handled by the redundant call servers.

  • In the below scenario, the SBC forks the call to routes R1 and R2. The routes R1 contains the egress INVITE R-URI as +1-80-41774568 and the routes R2 contains the egress INVITE R-URI as sip:bob@sonusnetexample@sonusnet.com.
    Figure 4: Non-Redundant Call Servers - Different AORs