DESC: Sony offers an SPP - 933, a single-line cordless phone. The 900MHz is used for extended range thanks to superior transmission technology and you can carry your cordless phone further-and still carry on a conversation. You can always dial the 20 most frequently used numbers stored in phone memory. The base speakerphone feature lets you answer incoming calls at the base as well as initiate new ones with the keypad. Intercom lets you talk between handset and base unit. Page signal initiates intercom contact in either direction, and with this phone you can arrange a three-way conference.