Brand: Motorola
Category: Telephone
Document Type: Manual
Language: EN
Manual for CT310
Uploaded: Nov. 21, 2025, 7:20 p.m.
Manual Publish Date: 2015-03-31
Warranty Information
One year for the product, 90 days for accessories, from the date of purchase.
- Making and Receiving Calls: Lift the handset or press speakerphone button to answer. Dial numbers directly or pre-dial before lifting the handset. Press hook switch or speakerphone button to end calls.
- Memory Functions: Store up to 10 numbers for quick dialing. Store numbers from the call list or directly. Dial memory numbers using the 'M' button.
- Call Lists: Access received and redial lists to review and redial numbers.
- Ringer Settings: Choose from 24 ringtones and adjust volume levels, including a crescendo option.
- Date and Time: Set manually or automatically via Caller ID service.
- Alarm: Set an alarm with a snooze function.
- Other Features: Hold, Redial, Dial Mode (Tone/Pulse), Recall, Auto IP for cost savings, and Display contrast adjustment.
Troubleshooting and error codes
| Problem | Possible Cause | Solution |
|---|---|---|
| No dial tone | Telephone line cord not supplied | Use only the telephone line cord supplied. |
| Telephone line cord not connected properly | Check that the telephone line cord is connected properly. | |
| Cannot store a number | No confirmation tone | Once you have stored a number there is no confirmation tone. |
| Number already stored | A number cannot be deleted once stored, you can overwrite it with a new number. |