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I know everybody used to use the following words or came to read at some point of time. But new guys like me may put question what it means. Some may have time to explain or some may say something without full info. I want everbody to share their knowledge about the following terms. What is this and what it means. I invite GURU's here to take up at least one word for a week and explain here about the term and how it will work or what actually it is. ASIC: Application-specific integrated circuit ABR:Area Border Router ADM : Add-Drop Multiplexer ARP : Address Resolution Protocol AS : Autonomous System ASBR : Autonomous System Boundary Router ASP : Active Server Pages ATM : Asynchronous Transfer Mode BGP : Border Gateway Protocol BOOTP : Boot Protocol BER : Bit Errror Rate CDMA : Code Division Multiplexing Access CIDR : Classless Inter Domain Routing CLI : Command Line Interface CLIP : Calling Line Identification Presentation CMS : Call Management Services CPE : Customer Premise Equipment CR-LDP : Constraint-Based Routing - Label Distributed Protocol CSMA/CD : Carrier Sense Multiple Access / Collision Detect CSU/DSU : Channel Service Unit / Data Service Unit CTI : Computer Telephony Integration CUG : Closed User Group DCN : Data Communication Network DHCP : Dynamic Host Configuration Protocol DNR : Dynamic Network Routing DNS : Domain Name System DSCP : DiffServ Code Point DSP : Digital Signal Processor DSN : Database Source Name DVMRP : Distance Vector Multicast Routing Protocol DWDM : Dense Wavelength Division Multiplexing DXC : Digital Cross-Connect DLD : Domestic Long Distance EGP : Exterior Gateway Protocol EIGRP : Enhanced Interior Gateway Routing Protocol ERP : Enterprice Resource Planning ECS : Enhanced Communication Services EMS : Enhanced Messaging Services FEC : Forward Equivalence Class FR : Frame Relay FTP : File Transfer Protocol FDDI : Fiber distributed Data Interface FSP : Fixed Line Projects GMPLS : Generalized Multiprotocol Label Switching (Multiprotocol Lambda Switching) GSM : Global System for Mobile Communication GMMI : Gigabit Media Independent Interface HTML : HyperText Markup Language HTTP : HyperText Transfer Protocol IAP : Internet Access Point IDC : Internet Data Centre IDS : Internet Data Services IEEE : Institute of Electrical and Electronic Engineering IETF : Internet Engineering Task Force IG : International Gateway IGMP : Internet Group Management Protocol IGP : Interior Gateway Protocol IFG : Interframe Gap IGRP : Interior Gateway Routing Protocol IN : Intelligent Network IP : Internet Protocol IPv4 : Internet Protocol version 4 (Addresses) IPv6 : Internet Protocol version 6 (Addresses) ISDN : Integrated Services Digital Network ISO : International Standard Organization ISP : Internet Service Provider ISUP : ISDN User Part ITU-T : International Telecommunication Union Telecom IXP : Internet Exchange Point LAN : Local Area Network LANE : LAN Emulation LCD : Liquid Crystal Display LDP : Label Distribution Protocol LED : Light Emitting Diode LER : Label Edge Router LMP : Link Management Protocol LQM : Link Quality Monitoring LSP : Label Switched Path LSR : Label Switching Router LASER : Light Amplification By Stimulated Emissions Of Radiation MAC : Media Access Control MGCP : Media Gateway Control Protocol MIB : Management Information Base MLS : Multi-Location Services MPLS : Multiprotocol Label Switching MPOA : Multiprotocol over ATM MSA : Master Services Agreement MMS : Multimedia Messaging Service NIC : Network Interface Card NAP : Nodal Access Point NAT : Network Address Translation NMS : Network Management Service NOC : Network Operation Center NTP : Network Time Protocol NZDSF : Non Zero Dispersion Shifted Single Mode Fiber OSI : Open System Interconnection OSPF : Open Shortest Path First OXC : Optical Cross-Connect OFC : Optical Fiber Cable PCB : Printed Circuit Board PDH : Plesiochronous Digital Hierarchy PIM : Protocol Independent Module PoP : Point of Presence POS : Packet over Synchronous Optical Network PPP : Point to Point Protocol PSTN : Public Switched Telephone Network PVC : Permanent Virtual Circuit PBX : Private Branch Exchange PMD : Polarization Mode Dispersion PIM : Personal Information Management RADIUS : Remote Authentication Dial-in User Service RARP : Reverse Address Resolution Protocol RAS : Remote Access Server RFC : Request for Comment RIP : Routing Information Protocol RMON : Remote Monitoring RSVP : Resource Reservation Protocol SDCA : Short Distance Charging Area SDH : Synchronous Digital Hierarchy SIP : Session Initiation Protocol SLIP : Serial Line Internet Protocol SLA : Service Level Agreements SMS : Short Messaging Service SMTP : Simple Mail Transfer Protocol SNMP : Simple Network Management Protocol SONET : Synchronous Optical Network SPF : Shortest Path First SQL : Structured Query Lanugae SSA : Secure Server Access STM : Synchronous Transport Module STP : Shielded Twisted Pair SS7 : Signaling System 7 SSH : Secure Shell SVC : Switched Virtual Circuit SES : Severely Errored Seconds TACACS : Terminal Access Controller Access Control System TAX : Trunk Automatic Exchange TCP : Transmission Control Protocol TCP/IP : Transmission Control Protocol / Internet Protocol TDM : Time Division Multiplexing TE : Traffic Engineering TEC : Telecom Engineering Center TFTP : Trivial File Transfer Protocol ToS : Type of Service TTL : Time to Live TIR : Total Internal Reflection UBR : Unspecified Bit-Rate UDP : User Datagram Protocol UTP : Unshielded Twisted Pair VAS : Value Added Services VMS : Voice Mail Services VLAN : Virtual Local Area Network VoIP : Voice over Internet Protocol VPN : Virtual Private Network WAN : Wide Area Network WDM : Wavelength Division Multiplexing WRED : Weighted Random Early Detection