Research in Motion Corporation

Blackberry Corporation

Gibran Siddique

Brian Alexander Oliver

Richard John George

Abhinav Gupta

Miranda Bing Ying Lim

Lap Luu

Valentina Iqorevna Kramarenko

Swee Tuan Pang

Miranda Bing Lim

A mobile device can send a notification to place a call using a PBX (e.g., using SIP signaling) or receive a notification of call availability for the mobile device at the PBX. An authentication token is provided over a data channel for use in authenticating the mobile device when calling the PBX on a voice channel. However, when the mobile device calls the PBX (e.g., on a DNIS number, where ANI information is made available to an application server), if ANI information is found to correspond to the mobile device, the PBX can send tone(s) indicating that the mobile device can respond with an abbreviated validation tone, rather than the entirety of the authentication token. If the ANI information is not obtained or not matched, then a different tone(s) is sent, indicating to provide the authentication token. If the authentication token provided does not match or if the mobile device does not respond, the voice channel is not set up.

Systems and methods of voice call setup involving mobile devices

Identifying an incoming call as from a mobile device of an enterprise communication system. Creating a first list relating mobile devices of the enterprise communication system with Public Land Mobile Network (PLMN) number of the device. Creating a hashmap comprising keys. Each key comprising the last n digits assigned as a PLMN number to at least one mobile device of the enterprise communication system. The hashmap further comprising a plurality of buckets. Each bucket corresponding to a key, and comprising a second list identifying each enterprise-associated mobile device having a PLMN number ending with the key. Receiving an Automatic Number Identification (ANI) number of an call incoming to the enterprise communication system. Retrieving at least one bucket corresponding to a key comprising the last n digits of the ANI number. Searching the retrieved bucket for the unique identifier associated with the full PLMN number.

Provisioning for enterprise service

A computer implemented method for transmitting dual tone multi-frequency (DTMF) tones is disclosed. The method includes sending an indication to a mobile device to start a cyclic ring tone including ring and pause periods. The delay incurred to send a DTMF tone to the mobile device is estimated. The server schedules the transmission of the DTMF tone to be received at the mobile device during a pause period of the cyclic ring tone and the DTMF tone is sent as scheduled.

System and method for the synchronized transmission of tone sequences

Aspects relate to provision of enterprise call capabilities to mobile devices. For example, a mobile device can indicate, over a data channel, that a PBX is to make a call on its behalf to a called party. The PBX can call back the mobile device, call the called party, and bridge those call legs to establish the call. The mobile device can employ mechanisms that a particular incoming call is made by the PBX. These mechanisms can include using ANI information, sending, and receiving audible verification codes over the voice channel established after answering the incoming call. The verification codes can be selected based on different behaviors of the mobile devices and the network or networks used by the device(s).

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Toronto, Canada

Gibran Siddique