Some deployments require the 7705 SAR-Hmc to use CBRS B48 and another band in order to operate. For example, in P-LTE networks, CBRS B48 can be used with B8 (privately owned and controlled) using a single SIM or Verizon may offer carrier LTE services using CBRS B48 with a single Verizon SIM.
The 7705 SAR-Hmc checks the radio parameters periodically, and if the band is not CBRS B48, it will relinquish the grant because it is no longer using the CBRS B48 spectrum. However, the node will attempt to maintain the registration with the SAS even while on the non-CBRS band.
If the 7705 SAR-Hmc reconnects to CBRS B48 and it is still registered with the SAS, it will enable the dynamic filter on the PDN router interface to stop SR OS traffic. The 7705 SAR-Hmc will initiate a grant request to re-establish the grant and its ability to use the CBRS B48 band. If the node was deregistered while on the other band, it will attempt the CBSD authorization process from the beginning, starting with the registration procedure.