1.13 Number Speed Dial Memory: Including 3 single-touch memory dials and 10 double-touch memory dials, it is very convenient to use the landline phone. You only need to store the phone number in the corresponding speed dial key, and then you can press the corresponding speed dial key on this wired phone to quickly dial the phone of your colleagues or relatives and friends, which greatly saves time, improves work efficiency, and can also keep in touch with relatives far away. 2. High/Low Receiving Volume Control: When the surrounding environment is noisy and the other party's voice is not clear or very quiet, you can adjust the volume control key on the wired phone to control the call volume in the landline phone handset to adapt to the surrounding environment. One-touch volume control allows you to use the landline phone comfortably in different environments. 3. Redial the most recent call number: You can quickly dial the most recent call. If you accidentally hang up the home landline during a call, you can immediately use the redial function of this wired phone to continue talking to the other party. 4. Versatile: This landline is equipped with functions such as flash, HAC and pause. When you don't want to answer the call, you can press the flash key to hang up. This corded phone is hearing aid compatible, so you can hear clear and steady voices when using this desk phone with hearing aids. The Pause feature provided by the PBX system inserts a short pause in the dialing sequence to prevent the number from being sent too quickly and not being recognized correctly by the outside line.