Viettel Caller Ring Back Tone (vCRBT)
vCRBT is a service enabling users to select and change the ring-tone music of incoming or outgoing calls while waiting for a connection.
General introduction
• vCRBT is a service enabling users to select and change the ring-tone music of incoming or outgoing calls while waiting for a connection.
• Deployed in the markets of Vietnam, Myanmar, Laos, Timor Leste.
Feature
- Caller ringback tone (RRBT).
- Basic ring-tone music feature.
- Intro ring-tone music.
- Promotion function.
- Business intelligence report (BI report).
Spectifications
Capacity
16 million subscribers/site
Reliability and availability
99.999%
BHCA
1.0
Average time to listen to ring-tone music
19.6s
Maximum delay of a call
500ms