Calls not getting connected for more than 5-6 DIDs. This is with two different SIP providers. @Sahil @Shubham Bajaj

## Check Concurrent Call Limits Your issue may be related to the default concurrent call limit of 10 calls (including both inbound and outbound). When this limit is exceeded, new calls will be dropped immediately. **Solution**: Increase your concurrent call limit through the dashboard to accommodate your multiple DIDs.

# API endpoint to check current limits
GET https://api.vapi.ai/account/limits

Source: - [Discord conversation about concurrent call limits](https://discord.com/channels/1211482211119796234/1334517022893150218)

The issue could be due to SIP trunk limits, PBX security blocks like Fail2Ban, or IP-based authentication issues, use credential-based auth, check PBX logs, and confirm limits with your SIP provider.