To enable dual SIM operation on the node, operators must perform the following tasks.
Procure two SIMs, each for a different cellular network.
If ADP-Hm is required, insert the SIM needed to operate with ADP-Hm into SIM slot 1. For more information about ADP-Hm, see the 7705 SAR-Hm and SAR-Hmc Main Configuration Guide, "Basic system configuration".
Ensure that each SIM is associated with a unique packet data network (PDN) by configuring a PDN profile and a PDN router interface that will be assigned a unique IP address during the PDN attach process. The PDN profiles and PDN router interfaces must be configured beforehand.
Choose whether the SIMs will be switched manually or use automatic failover. If automatic failover is chosen, the operator must determine the criteria for failover. See Criteria for automatic failover for information.