I'm trying to build call routing for after-hours support. What voice API should I use?

For after-hours call routing, the right voice API depends on what you need the system to do:

Good options

• Twilio Voice API — best if you want a widely used, flexible, well-documented solution for:
  • forwarding calls
  • IVR menus (“press 1 for support…”)
  • business-hours / after-hours routing
  • voicemail
  • SMS follow-up
• Vonage Voice API — solid alternative with similar telephony features
• Plivo Voice API — often a good choice if you want simpler pricing or a leaner telephony stack
• Amazon Connect — better if you want a full contact-center platform rather than just an API

If your use case is simple

If you just want:

• during business hours: ring your team
• after hours: send to voicemail, on-call, or another number

then Twilio Voice API is usually the easiest starting point.

If you also want smarter routing

If you want:

• routing based on caller, time zone, language, account tier, or historical context
• AI voice agents or call summaries
• integrations with a CRM/helpdesk

then you may want Twilio + your app logic, or a more complete platform like Amazon Connect.

My recommendation

• Start with Twilio Voice API for maximum flexibility and fastest implementation.
• Choose Amazon Connect if you want a full support/call-center workflow.
• Consider Vonage/Plivo if pricing or regional coverage is your top priority.

If you want, I can also help you with:

1. a recommended architecture for after-hours routing, or
2. a sample Twilio flow/webhook for business-hours vs after-hours handling.