Which SMPP version is supported? Nexmo Support October 14, 2021 20:22 Updated Question Which version of SMPP is supported? Applies To SMPP Answer The Vonage SMPP API supports SMPP version 3.4. You can download the SMPP v 3.4 protocol specifications here. Related articles Vonage SMPP Server At A Glance Where do I find my SMPP credentials, port, and host? Which host and port do I use to connect to the Vonage SMPP server? Connecting to SMPP Over SSL/TLS Should I bind with transceiver or transmitter/receiver? Comments 0 comments Please sign in to leave a comment.