ZXMSG 5200 (V2.0) Technical Manual 
72  Confidential and Proprietary Information of ZTE CORPORATION 
Abbreviations  Full Name 
CHW  Communication Highway 
CIC  Circuit Identification Code 
CKG  Clock Generator 
CM  Control Memory 
CMIP  Common Management Information Protocol 
CMF  Center Module Frame 
CPU  Center Process Unit 
CON  Conference Calling 
CRD  Call Rerouting Distribution 
CSI  Called Subscriber Identification 
CSM  CCS No7 Signaling Module 
CSV  Centralized Supervision Board 
CTF  Control Frame 
D/A  Digital-analogue Converter 
DC  Direct Current 
DCN  Data Communication Network 
DLC  Digital Line Circuit 
DSLC  Digital Subscriber Line Circuit 
DT  Digital Trunk 
DTE  Data Terminal Equipment 
DTM  Digital Trunk Module 
DTMF  Dual Tone Multi-Frequency 
DRAM  Dynamic Random Access Memory 
DUP  Data User Part 
DWLL  Digital Wireless Local Loop 
ICS  Extended Process Unit 
EPROM  Erasable Programmable Read only Memory 
FSK  Frequency Shift Keying 
FSLC  Far Distance SLC 
FTTB  Fiber to the Building 
FTTC  Fiber to the Curb 
FTTH  Fiber to the Home 
GK  Gatekeeper 
GPS  Globe Positioning Satellite 
GSM  Globe System For Mobile Communication 
GW  Gateway 
HDSL  High-speed Digital Subscriber Line