Making a
BlackBerry device–initiated call from a
BlackBerry device to
an external number
- A
BlackBerry Mobile Voice System user makes a call from a
BlackBerry device to a phone number that is
external to the organization.
- The
BlackBerry MVS Client creates a call
establishment request, which includes the external number. The
BlackBerry MVS Client compresses and encrypts
the call establishment request, and sends it to the
BlackBerry Enterprise Server
over the wireless data network.
- The
BlackBerry Enterprise Server decrypts and
decompresses the call establishment request, and sends it to the
MVS BlackBerry Enterprise Server
Connector.
- The
MVS BlackBerry Enterprise Server
Connector sends the request to the
MVS Session
Manager.
- The
MVS Session
Manager sends a
confirmation request to the device. The confirmation request includes the
DID/DDI number that the
BlackBerry MVS Client uses to communicate with
the
MVS Session
Manager.
- The
BlackBerry MVS Client uses the wireless voice
network to make a call to the PBX.
- The PBX routes the call to
the
MVS Session
Manager over the SIP
trunk using the DID/DDI number.
- The
MVS Session
Manager answers the
incoming call. The
MVS Session
Manager sends a message
to the
BlackBerry MVS Client to indicate that it
answered the call.
- The
MVS Session
Manager and the
BlackBerry MVS Client use a two-way protocol
to authenticate the call.
- The
MVS Session
Manager verifies the
call and requests that the PBX make a call to the external number over the PSTN
using the SIP line.
- The PBX determines that the
number is external to the organization and rings the external number over the
PSTN.
- The recipient answers the
call at an external phone.
- The
MVS Session
Manager uses DTMF tones
to indicate to the device that the call is connected to the external number.
The
MVS Session
Manager connects the
SIP line call leg to the SIP trunk call leg, and voice communication occurs.
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