Vaibhav H YAn OBD call is an automated outbound call placed by a software platform instead of a person. OBD stands for outbound dialling: the system dials a list of numbers and, when someone answers, plays a pre-recorded audio file or a message generated by text-to-speech. Businesses use it to deliver the same short message to many people without tying up staff on the phone.
How an OBD call works
The mechanics are simple, which is a large part of the appeal.
- A contact list is uploaded or pushed in through an API.
- A message is prepared, either as a recorded audio clip or as text that the platform converts to speech.
- The campaign is scheduled for a suitable window.
- The platform dials the numbers over its telephony connection, many at a time.
- When a call is answered, the message plays. If the campaign allows it, the listener can respond by pressing a key.
- Each attempt is logged with its outcome, such as answered, busy, not reachable or no answer.
No agent is on the line. That is the main difference between an OBD call and a call placed through a dialer in a contact centre.
Types of OBD calls
| Type | What the listener hears | Typical use |
|---|---|---|
| Plain broadcast | One recorded message, then the call ends | Announcements, alerts |
| Personalised broadcast | A message with details read out by text-to-speech | Reminders with a name, date or amount |
| Interactive broadcast | A message followed by a keypad prompt | Confirmations, simple surveys, interest capture |
Interactive campaigns rely on DTMF, the tones a phone sends when a key is pressed. The platform records which key was pressed against each number.
Where OBD calls fit
OBD calls suit messages that are short, the same for most recipients and useful to hear right away.
- Appointment, payment and renewal reminders
- Service notifications such as outage notices or delivery updates
- Emergency and community alerts
- Event invitations and promotional announcements to people who have agreed to receive them
- Short surveys answered with a keypad press
A voice call can also reach people who do not read text messages regularly, or who are more comfortable listening in their own language than reading.
Where OBD calls do not fit
An OBD call is a one-way or very lightly interactive channel. It is a poor choice when:
- The recipient is likely to have questions that need an answer on the spot
- The message is long, detailed or needs to be referred to later, where a written channel works better
- The topic is sensitive and deserves a human conversation
- The audience has not asked to hear from you and is likely to treat the call as a nuisance
If the conversation needs to go beyond a keypad press, a voice bot or a live agent is the more suitable tool.
Running OBD campaigns responsibly
Automated calls are easy to send, and easy to overuse. A few habits keep campaigns useful instead of irritating.
- Respect do-not-call preferences. Remove numbers that have opted out before each campaign, and honour new opt-out requests promptly.
- Identify the caller at the start of the message so the listener knows who is speaking and why.
- Keep the message short and put the important point first.
- Call at reasonable hours for the audience.
- Limit retries so unanswered numbers are not dialled again and again.
Rules for commercial calling in India change over time and depend on the type of message. Check the current requirements with your telecom provider or adviser before launching a campaign.
Where NetLumen fits
NetLumen BlastX is a voice broadcast platform for sending pre-recorded or text-to-speech messages. Its features include scheduled campaigns, DTMF response capture, DNC scrubbing, retry logic, delivery reports and API access. Where a campaign needs a two-way spoken conversation, NetLumen VoiceAI is the conversational voicebot in the range, and NetLumen DialX covers agent-led outbound calling.
Frequently asked questions
What does OBD stand for?
OBD stands for outbound dialling. In practice the term refers to automated calls that play a recorded or synthesised message to a list of numbers.
Is an OBD call the same as an IVR?
Not quite. An IVR usually answers inbound calls and routes the caller through a menu, while an OBD call is placed outward by the system. An interactive OBD call borrows the keypad-response idea from IVR.
Can an OBD call connect the listener to a person?
Some campaigns are designed so that a keypad press leads to a callback or a transfer. Whether this is available depends on the platform and how the campaign is set up, so confirm it with your provider.