FSK and DTMF caller ID, automatic detection. .
Outgoing: Up to 16 groups of 8 bits, internal dynamic storage, up to 16 bits can be stored.
6 Incoming call: The incoming call are connected and not connected function. The maximum 53 groups of 8 digits are single-key and blacklist full dynamic storage.
72 groups of 12-bit single-key memory, 10 groups of 12-bit double-key memory
5groups of 16-bit blacklist numbers can be set arbitrarily. If the caller is a blacklist number, the phone will automatically pick up the hook.
11 Caller ID can be set to VIP number when inquiring, anti-delete (cannot be deleted in a single group, all can be deleted).
5-digit local code, incoming call filtering, 1 outgoing code.
The R key is fixed for 100ms.
redial, callback function
32-bit pre-dial, callback and error correction