COSTATEL is a softphone from COSTATEL Telecommunication Company, which allows make and receive calls by using WiFi or 3G/4G internet connections.
You would need an account (login and password). Please contact Us in case You do not have that information yet.
Software features:
Unlimited user license
SIP protocol support
Making and receiving calls
Codecs supported: G729, G722, G711,GSM
Codecs Selection
Call timer
Balance Display
Recent Call
Phone Book (Synchronize with Phone Address Book)
Add contact from App
Local signaling (Dial tone, busy, ring back, etc.)
Redial
Speaker
Mute
Touch Tone
Silence Suppression
Echo Cancellation
Registration Timeout
Proxy Setting
STUN Server
Minimum System Requirements:
Device Supported : iPhone 5 & iPhone 4
iOS Supported : iOS 6.x & 7.x