Incoming calls are not ringing, but showing the blinking light when coming in. Volume is high enough, ringtone is set.

Go to phone settings then sounds and make sure your ringer volume is up and that you don't have a ringtone of Silent or off

Could you have turned the ringer off? Rather easy to do, just press the "volume down" several times, and no ring.

try to assign a different ringtone (if it works its not a problem with the phone its with ringtone itself that you are currently using)

Sound Settings
You can customize various sound settings.
Incoming call
Note: When downloading MegaTones® or HiFi RingersTM, charges may apply.

Ringtone.
This menu allows you to select a ring melody. Highlight Ringtone and press . Use the Up or Down key to highlight a ring tone or press the Left or Right key to select a file from either the Default Melodies, Voice list, or Sounds folders. Press the Select soft key.

Volume
This menu allows you to adjust the ring volume to one of 7 levels plus Silent mode and Vibration mode.

• Use the Right or Left key to increase or decrease the volume.

Alert type
This menu allows you to specify how inform you of incoming calls. Use the Right or Left key to select an Alert type.
The following options are available:
- Melody: the phone rings using the ring melody selected in the Ringtone menu.
- Vibration: the phone vibrates but does not ring.
- Melody and vibration: the phone rings and vibrates simultaneously.
- Vibration then melody: the phone vibrates three times and then starts ringing.
- Melody then vibration: the phone rings using the ring melody selected in the Ringtone menu and then vibrates.

Message tone
This menu allows you to set up the ringer for incoming messages. You can set the Tone, Alert type, and Repetition.

• Use the Up or Down Navigation keys to make your selections.

Keypad tone
This menu allows you to select a Beep or a Xylophone for your Keytone and to select the Volume (0-7) that the
phone sounds when you press a key.

• Use the Up or Down Navigation keys to make your selections.

Check out this link for a PDF manual for your phone. Just copy and paste into your browser.

http://safemanuals.com/user-guide-instructions-owner-manual/UTSTARCOM/PCS1400-_E

I got this info off of page 60 from your manual.

CUSTOMIZING YOUR PHONE VOLUME
Control the volume for Ringtone, Speakerphone, Headset, and Advanced settings.
Ringtone
Set ringtone volume and incoming call alert options:
1. Press [Menu], then press "Settings".
Press "Sounds", then press "Volume".
2. Press "Ringtone".
3. Press / to adjust the volume level. Press to select Vibrate when High is the volume level.
The volume settings available are:
• Silence all: All sounds are off.
• Vibrate : Phone will vibrate to alert you of incoming call or message.
• Off: Only the ringtone is muted.
• Ringtone mode: Low, Medium, High.
Tip • You can adjust the ringtone volume with the side keys.

Hope this helps. Let me know if I can help you with anything else.
JimmyC

Hi. First thing, you can check your sound settings, by tapping Star Menu, then Settings, then Sounds & Notifications, and through that page, you can check if your incoming call alert is on (just sound, or vibrate and sound), you can try to change the ringtone to see if your current ringtone is damaged or not. (Since other sounds are alright, there shouldn't be any problem in your hardware or in the sound volume levels) Hope this helps.

You can set the length of your incoming ring to in the Call forwarding portion of the phone. Usually, it is set to 25 seconds. It can go as high as 30 seconds. To set the ringer to be longer or shorter, it goes by 5,10,15,... set of 5 increments. up to 30.
I would also recommend to use a factory set ringtone, set the profile to LOUD or OUTDOORS. With vibrate option on. Some downloaded ringtones don't play as loud.

check if the format of ringtone set is compatible with your phone..
try to restore the refactory settings once.

thankyou.

there are some settings in your handset

-menu-profiles-select the current profile-than personalise-than click on tune set up, than u can select your mp3, you can select your tune mode/volume

The formatt of the ringtone you have recieved might not compatible, if it is polyphonic try to download midi format.