Telephone Number. You may not sell any telephone number assigned by SunRocket ("Number"). Upon termination of the Service, SunRocket may, in its sole discretion, release a Number that was ported in from a previous service provider to SunRocket by you and used in connection with your Service provisioned by SunRocket to your new service provider, if such new service provider is able to accept such Number, provided that your entire account has been terminated, that you have paid all charges due to SunRocket, and that you request the transfer upon terminating your account.

•RingMaster/Distinctive Ring: I found out the hard way that this service will cause a port to fail. Those with this service have more than one phone# assigned to your line, and when the second or third numbers are dialed, a the line rings with a different pattern (e.g. double short ring or short-long-short ring).
•DSL Flag: If you have ever had DSL on your phone line, you must be certain that the DSL service is canceled and your telephone provider has adjusted your account accordingly. Sometimes, even after canceling DSL, the account flag is not removed.
•Local Carrier Freeze: I'm not exactly sure if it's called a Local Carrier Freeze, but similar to a PIC freeze with your long distance carrier, I'm certain you can tell your local telco to not change your service provider without explicit authorization from you. (Certainly, slamming is just as illegal for local service as it is for long distance service, so the local service must have the same protection options as long distance service.) The only way to remove this block from your line is to call your telco and ask them to remove it.