
Callr
7.6#2 in voice apisFrom €599 a monthAndroidiOSWebAPI
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| Fact | Callr | Telnyx SIP Trunking |
|---|---|---|
| Global coverage | The platform provisions phone numbers in more than 220 countries. | The SIP trunking product page states coverage in more than 230 countries. |
| Headquarters | Paris and New York | LinkedIn lists Telnyx headquarters at 600 Congress Avenue, Austin, Texas. |
| Integrations | Callr lists native connectors for Salesforce, HubSpot, Google Analytics, and Google Ads, plus a REST API and webhooks. | Telnyx lists Microsoft Teams, Zoom Phone, 3CX, FreePBX, Asterisk, Talkdesk, UJET and Genesys integrations or configuration paths. |
| Network | Callr says it operates its own carrier network and servers rather than reselling a hyperscaler’s infrastructure. | Telnyx describes its SIP service as running on a private global network that it owns rather than rents. |
You want what its maker publishes above — check its page for the details.
It suits businesses that need global voice calling and PSTN connectivity, including enterprise users. Teams using 3CX, FreePBX, Asterisk, Microsoft Teams or Zoom Phone may find its listed compatibility relevant.