I just want to know how to use the CAC in the following scenario,
HQ is device are into a device pool and Branch office put into a different device pool. A user belongs to HQ visit Branch office and uses his softphone at the branch office. Even though the user in the Branch office softphone register with the HQ device pool. In this case CAC will not reduct its bandwidth from the allocated bandwidth if the user uses the softphone to call HQ extension. In this scenario How to over come this issue?