Why do I get a “Connection Timed Out” error with SMPP?

< 1 min read

A “Connection Timed Out” error means your client can’t reach our server. Test with telnet smpp.smsgatewaycenter.com 2775—if it fails, check your firewall, IP whitelist, or internet. Increase your client’s timeout settings if needed. Our SMPP connection troubleshoot this—contact support if unresolved for our SMS gateway.