Typically, customer sites have load balancers in place and configured prior to the start of the Spok Mobile installation. Load balancers must be configured properly to ensure that the system can successfully fail over and be monitored. The supported health monitor for the Spok Mobile environment is tcp_half_open. Note that this only applies to the 2000x MXPP ports.
For more information, see the Load Balancer and Server Ports Workbook for CCS 1.9