07.053GPPTSUse of Data Terminal Equipment - Data Circuit Terminating Equipment (DTE-DCE) Interface for Short Message Services (SMS) and Cell Broadcast Services (CBS)
The present document includes references to features which were introduced into the GSM Technical specifications after Release 96 of GSM Phase 2+. The text that is relevant, if the feature is supported, is marked with designators.
The following table lists all features that were introduced after Release 96 and have impacted the present document:
Technical enhancement and improvement: New optional command
Enhanced Validity Period Format