SMSC Relay ActiveX SDK 

SMSC Relay ActiveX SDK library is a ActiveX library for SMS/EMS communication with the SMSC through TCP/IP. Protocols SEMA, CIMD2, UCP and SMPP. Send and receive SMS, EMS, logos, ring-tones, 7-bit text, 8-bit binary data and Unicode (UCS2) messages.
smsc smpp ucp sema cimd cimd2 sms ems smsc relay activex mobile messaging sms gateway sms server

SMSC Relay VCL SDK 

SMSC Relay VCL SDK library is a VCL library for SMS/EMS communication with the SMSC through TCP/IP. Protocols SEMA, CIMD2, UCP and SMPP. Send and receive SMS, EMS, logos, ring-tones, 7-bit text, 8-bit binary data and Unicode (UCS2) messages.
smsc smpp ucp sema cimd cimd2 sms ems smsc relay vcl mobile messaging sms gateway sms server