Kotha247

Kotha247 is a mobile app for Android, offering a range of functionalities like VoIP Calls & SMSs, Instant Messaging and DID number and much more from data enabled mobile phones (3G/4G or WiFi).

For using this app, end users will only need to enter his/her full name and current mobile number with country code and have to press start button to connect to our system to start calling and send SMSs.

Features:

* User friendly interface.

* Crystal clear voice quality.

* Easy Sign Up. Only need user's Name and current mobile number with

country code

* Username and Password less login

* VoIP Calls via Wi-Fi, 2G / 3G / 4G /5G.

* SMS to Bangladesh with low cost

* DID( Direct inward dialing) number from around the world including

Bangladesh

* Works in all Countries and all Networks across firewalls.

* Smooth voice quality

* Echo cancellation

* Uses very less bandwidth.

* Flexible integration with your Phone Book contacts.

* Display Balance.

* QoS for VoIP Calls.

* Dialed/Received Call History.

* Call timer.

For End Users:

You will be prompted for the following while starting the app:

1. User full name – User have to enter user full name.

2. Mobile number – User have to enter user's current mobile number with

country code.

TECHNICAL OUTLINE

• Use Session Initiation Protocol.

• Support OPUS, ILBC, G711 SPEEX codec.

• Compatible with EDGE, GPRS, 3G, 4G, 5G & Wi-Fi.

• Consumes very low bandwidth.

• Improved Jitter Buffer for low speed internet.

• Scalable Mediation Platform.

• NAT Traversal or Private IP address.