Video tutorial coming soon!
Choosing a voice
CallDesk offers multiple AI voices. Each has different characteristics:Voice options
| Voice | Description | Best for |
|---|---|---|
| Professional | Clear, confident, business-like | Law firms, financial services, B2B |
| Friendly | Warm, approachable, conversational | Home services, healthcare, retail |
| Energetic | Upbeat, enthusiastic, dynamic | Sales, fitness, youth-oriented |
| Calm | Soothing, patient, reassuring | Healthcare, therapy, senior services |
Previewing voices
Before choosing, preview each voice with sample phrases:- Go to Settings → Voice
- Click “Preview” on each option
- Hear how it sounds with your business name
- Select the one that fits
Voice speed and tone
Beyond the voice itself, adjust how it speaks:Speaking pace
| Setting | Effect |
|---|---|
| Slower | More deliberate, easier to understand |
| Normal | Natural conversational pace |
| Faster | More energetic, efficient |
Tone adjustments
Fine-tune the emotional quality:- Warmth: How personable and caring
- Formality: How professional vs. casual
- Energy: How enthusiastic vs. measured
Communication style
Greeting
How does AI answer the phone? Formal:“Good afternoon, thank you for calling Johnson Law Firm. How may I assist you today?”Friendly:
“Hi there! Thanks for calling Johnson Plumbing. What can I help you with?”Efficient:
“Johnson HVAC, how can I help you?”Customize your greeting in Settings → Scripts → Greeting.
Conversation style
Set general guidelines for how AI communicates:Be concise
Get to the point. Don’t ramble.
Be thorough
Explain fully. Don’t rush.
Be empathetic
Acknowledge feelings. Show understanding.
Be efficient
Focus on solving the problem quickly.
Language support
CallDesk AI speaks 100+ languages.Setting the primary language
Your AI’s default language. It will use this unless the caller speaks something else. Most common:- English (US)
- English (UK)
- Spanish
- French
- Mandarin
Multilingual mode
Enable automatic language detection:- Caller speaks in Spanish
- AI detects the language
- AI responds in Spanish
- Conversation continues in Spanish
Language-specific greetings
Set different greetings for different languages: English:“Thanks for calling Johnson Services. How can I help?”Spanish:
“Gracias por llamar a Johnson Services. ¿Cómo puedo ayudarle?”
Personality traits
Give your AI personality guidelines:Examples
For a law firm:- Be professional and authoritative
- Use precise language
- Never make promises about case outcomes
- Express empathy for difficult situations
- Be friendly and down-to-earth
- Use simple, clear language
- Express urgency for emergency calls
- Be reassuring about fixing the problem
- Be warm and compassionate
- Use calm, reassuring tone
- Be patient with questions
- Never give medical advice
Setting traits
Go to Settings → Personality and add traits like:- “Be friendly but professional”
- “Use the customer’s name when possible”
- “If someone seems frustrated, be extra patient”
- “Always end with ‘Is there anything else I can help with?’”
What AI calls itself
Introduction
How does AI introduce itself? As an AI:“Hi, this is the AI assistant for Johnson Plumbing. How can I help?”As a team member:
“Hi, thanks for calling Johnson Plumbing. How can I help you today?”
When directly asked if they’re speaking to a human, AI will always be honest. It won’t pretend to be human.
Name
Give your AI a name if you want:- “This is Alex from Johnson Plumbing”
- “This is the scheduling assistant for Johnson Plumbing”
- No name: “Thanks for calling Johnson Plumbing”
Outbound prompt
When your AI makes outbound calls (campaigns, workflows, follow-ups), it uses a separate greeting and set of instructions from your inbound configuration.Configuring outbound defaults
- Go to your phone number’s Voice tab
- Expand the Outbound Prompt section
- Set your Outbound Greeting — the first thing the AI says when calling someone
- Set your Outbound Instructions — how the AI should behave during outbound calls
Example outbound greeting
“Hi there! This is an AI assistant calling on behalf of Johnson Plumbing. Is now a good time to talk?”
Example outbound instructions
- State the purpose of the call clearly and concisely
- If they’re busy, offer to call back at a better time
- If not interested, be gracious and end the call
- Never make up information — offer to find out and follow up
Individual campaigns and workflows can override these defaults with their own scripts. The outbound prompt serves as the fallback when no specific script is provided.
Testing your settings
After configuring voice and personality:- Call your number and have a conversation
- Listen to how it sounds. Does it match your brand?
- Try different scenarios. Friendly caller, frustrated caller, quick question
- Review transcripts. Does the text read the way you want?
- Adjust and repeat. Fine-tune until it feels right
Best practices
Match your brand
Your AI should sound like an extension of your existing brand voice.
Test with real calls
Simulated tests only go so far. See how it handles real conversations.
Get feedback
Ask customers what they thought. Their perception matters.
Iterate
Your first setup won’t be perfect. Adjust based on what you learn.
FAQ
Can I use a custom voice?
Can I use a custom voice?
The Max plan includes custom voice cloning. Contact us to learn more.
Can I change the voice later?
Can I change the voice later?
Yes. Change voice settings anytime. The new voice takes effect immediately for all future calls.
Does AI use the same voice for all languages?
Does AI use the same voice for all languages?
AI uses native-sounding voices for each language. The English voice and Spanish voice are both optimized for their respective languages.
Can different automations use different voices?
Can different automations use different voices?
Yes. Your receptionist can use one voice while reminder calls use another. Configure per-automation in Settings.
Configure Your Voice
Choose your voice and personality settings.