52Appendix D - MMSID & License InformationVHF 7100 onlyYou must obtain a user MMSID (Marine Mobile Service Identity) and enter itinto your VHF 7100 in order to use the DSC functions. Contact the appropriateauthorities in your country. If you are unsure who to contact, consult yourNAVMAN dealer.The user MMSID is a unique nine digit number, similiar to a personal telephonenumber. It is used on marine transceivers that are capable of using DSC (DigitalSelect Calling).Depending upon your location, you may need need a radio station license forthe VHF 7100. You may also also need an individual operator’s license.NAVMAN NZ recommends that you check the requirements of your nationalradio communications authorities before operating DSC functions.