CALLUP OTAF enables mobile operators to provision and update handsets remotely on behalf of subscribers by sending relevant OTA messages, carried over SMS,  to the targeted handsets.
Provisioning of new handsets into a CDMA network is complex and activating mobile data services, such as WAP, e-mail and MMS, requires users to manually configure the handset with the appropriate settings.
With CALLUP's OTAF system, handsets can be sold, configured and immediately activated in any place such as kiosks, supermarkets, airports, etc. Handsets can be updated without having to contact the users or have them come to points of service

OTASP:
CALLUP OTAF platform supports the *228/*229 IVR portal to allow new phones to be activated and provisioned in the operator’s network. Handsets can be sold, configured and immediately activated in any place such as kiosks, supermarkets, airports, etc.

OTAPA:

• Number Assignment Module (NAM) programming (download and uploaded)
• A Key generation for session authentication
• Preferred Roaming List (PRL) download and upload.
• 3G Packet Data (3GPD) operational parameters
• Preferred User Zone List (PUZL)

CALLUP OTAF supports true ESN, Pseudo ESN and MEID. It includes web interface for administrators and customer support representatives, for OTAPA actions. CALLUP provides a complete API for integration with 3rd party systems.