JMRS means Java Message Relay Server.(in mobile phone server side environment; escpecially MM4, MM7 protocols and SMCI protocol enabled server).
-MM4 and MM7 is protocols for MMS (Multimedia Message Service)
-SMCI is protocol for SMS (Short Message Ser
Tambur Messaging Gateway is a Java (J2EE) based SMS/MMS messaging gateway. Feature highlights include support for most SMSC/MMSC protocols, an advanced message router, complete web-based management and support for billing.