When i make a call i hear a specific sound resound when the opposite party speaks to me if loud speaker is on its fine

Just a wild guess: the speaker. Did someone drop it, by any chance?

The speaker must be free to vibrate and may need to resound off the surface, try turning it upside down, hanging it, putting up against wall or flat object or even in an open container like bowl or plastic cup.

Feedback is a sharp, loud noise that can come through the earphones of a headset unexpectedly---it occurs when the headset is getting sound (feed) from someone else speaking or playing music into a microphone. This sound can create a dangerous situation for someone who is operating expensive equipment or flying a plane at the time since it can disable hearing temporarily.
If you experience feedback often, it could also lead to serious hearing problems.

Mic Too Close to the Speaker or Volume Too High
The main cause of a feedback sound in a headset is proximity to a speaker. If a person holding a microphone on the other end gets too close to a speaker, it creates a loop of re-amplified sound that results in the loud, screeching noise. When the volume on the other party's microphone is too high, it is more vulnerable to picking up unwanted noise and feedback from speakers and sound output devices in the room. So make sure that you ask the other party to turn down the microphone to a normal level and stay far from speakers. b> Two Microphones Gathering Same Sound b> When the other party places two microphones too close to each other, it could cause feedback. When positioned toward the sound source (such as a person speaking) the microphones will both pick up the same audio and compete with each other when creating the output of sound, causing a sharp noise in your headset. This problem, called acoustic phase interference, is resolved by simply ensuring that the other party uses one microphone at a time. Poor-Quality Headset or Microphone b> One common cause of feedback is simply a poor-quality headset or microphone. Most modern headsets and microphones have noise-canceling features that manage and kill feedback before it has a chance to occur. These noise-canceling headsets are essential for pilots and aviation crew members. If you hear sudden feedback that is strong enough to hurt your ears, the headset or microphone is simply not properly equipped to actively cancel that unwanted noise before it hits your ears. Buy a higher-quality noise-canceling headset to manage the feedback noise when you're going about your tasks. Hope this helps.

Sounds like your speaker has gone, when you next get a call put it on loudspeaker, it should solve the problem, as its a different speaker, you can put it in loudspeaker from options menu when you get a call.

There is no way to lower your outgoing volume, just try speaking a bit more quiet when using the phone.

In any phone cordless // Mobile or landline there are two things one is microphone & other is speaker. Microphone is when u speak caller party can hear u & speaker is to hear when someone from otherside speak. In ur case the speaker might be faulty get it repaire by the local technician

replace the mouth piece of your phone the problem is solve

To confirm that ur speaker is dead try to speak in the loud speaker mode. If u happen to hear them in loud speaker mode but not in the normal speaker mode then its confirmed that u need to replace ur speaker unit.

Thankyou

your speakerphone may have been damaged

who you bought the parrot from you should speak to them about it.