TCP 9900
Synopsis
- IUA (ISDN Q.921-User Adaptation Layer, part of SIGTRAN) is IANA-registered on TCP port 9900 and is implemented in real telecom signaling stacks; for example, OpenSS7 provides IUA that can operate on TCP/9900 for transporting ISDN D-channel signaling over IP.
Observed activity
Last 30 days
Detailed chart