今天终于把它抓下来了！可以同时学习ASN.1和MMS了。
学习ans.1.
Universal Mobile Telecommunication System (UMTS) 3rd Generation Partnership Project (3GPP) Applications (RANAP, RRC, NBAP, RNSAP)
Security Related Specifications (X.509, PKCS, PKIX, X9 standards, XCBF Biometrics)
Computer Supported Telephony Applications (CSTA)
TAP3 (Transferred Account Procedure)
Telecom Protocols (GPRS, MAP, CAP, CAMEL)
Aeronautical Telecommunictions Network (ATN)
Manufacturing Message Specification (MMS)
H.323 VoiP related protocols (H.225, H.235, H.245)
T.38 Real-Time Fax over IP
Association Control Service Element (ACSE) and Remote Operation Support Element (ROSE)
还有SNMP . 学习的相关于ASN.1