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Joseph Martini
Cisco Employee
Cisco Employee

When deploying Cisco Emergency Responder (CER) with the primary and secondary servers separated by a WAN, the requirements for this deployment are as follow.

1) Maximum of 40ms round-trip delay between the CER primary and secondary.

2) Minimum bandwidth of 1.544 Mbps between the CER primary and secondary.

3) Maximum of 40ms round-trip delay between each CER server and it's CUCM CTIManager server.

These requirements apply to CER 8.6(1) and prior versions.

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