American Standard Code for Information Interchange.
Bellcore AMA Format.
billing and measurements.
Billing and Measurements Server. Performs CDR mediation and generates operational measurements derived from the call records. Converts the TLV (binary) CDRs produced on the PGW host to industry standard formats. More specifically, a standalone (simplex) or redundant pair of Sun host machines that Gateway TLV records via FTP from Cisco PGW nodes for post-processing into BAF output records using internal flat file tables and appropriate filtering, formatting, and CDR-to-BAF conversion routines.
call detail block.
call detail record.
Cisco MGC software
Cisco Media Gateway Control (MGC) software. The generic name given to the Cisco software application that performs signaling and call control as well as the network functions expected from a PSTN switching point (SP). It terminates MTP3 and higher layers of the SS7/C7 protocol stack.
Cisco PGW 2200 PSTN Gateway
A collection of PGW hosts that collectively provide distributed call control (CC) and signaling services.
Cisco Signaling Link Terminal. An SLT provides physical connection to the SS7 network. It terminates MTP Layer 1 and 2 and backhauls MTP 3 and higher layers to the PGW hosts over the signaling (IP) network for call. Two or more SLTs are deployed in load-sharing mode.
competitive local exchange carrier. Authorized by the Telecommunications Act of 1996, the creation of CLECs effectively constituted Phase II of the deregulation of the telecommunications market in the United States. Phase I was characterized by the divestiture of AT&T with the Judge Green decision of 1984. This decision led to the creation of the Baby Bells and enabled stronger competition in the long-distance market by MCI and Sprint. Phase II targeted the "local loop" and the Local Exchange Carriers (Bells and others) and led to the formation of startup companies with new investment capital. Some CLECs chose to resell excess capacity from the traditional carriers, others to create new plant, such as SONET ring fiber networks for business customers.
competitive local exchange carrier
Destination Point Code.
digital service 0. A 64-kbps digital TDM channel used for carrying a single POTS call.
digital service 3. A 45-Mbps digital link.
egress: outgoing or terminating.
Element Management System. Provides element management for the Cisco PGW 2200. The Cisco Voice Services Provisioning Tool (Cisco VSPT) enables bulk provisioning and Cisco MGC Node Manager (Cisco MNM) provides fault and performance management.
File Transfer Protocol.
See also MGW.
H.323 Signaling Interface. It enables the Cisco PGW 2200 (in Call Control mode) to act as an H.323 end point.
Initial Address Message
ingress: incoming or originating.
incumbent local exchange carrier.
A collection of Internet network usage records for billing purposes, such as real-time streaming video and voice/IP.
Telephony services provided over the Internet.
Integrated Services Digital Network. ISDN services are gradually replacing POTS in affluent communities. Competing against ISDN are asynchronous digital subscriber lines and multiservice wireless applications.
Internet service provider.
Provides IP connectivity between all the elements of the signaling network. This signaling network is also referred to as the Control Signaling Network.
local exchange routing guide.
Man Machine Language
Media Gateway Control Protocol
Media Gateway Controller software. A generic term used for the Cisco PGW 2200 PSTN Gateway software when both call control and signaling applications apply.
Media Gateway Control Protocol. A protocol based on a merging of the IPDC and SGCP protocols.
media gateway host. A device that physically contains the media gateway (that is, MGX is a media gateway host, VISM is the corresponding media gateway). MGH and MG are sometimes used interchangeably, depending on the context and device being referenced.
media gateway. A generic term used for the gateway between a QoS packet network and the PSTN/ISDN. There are three types of gateways: the trunking gateway, the access gateway, and the network access server or nonvoice gateway. Media gateways are termination points for the Media Gateway Control Protocol. Media gateways terminate MGCP links.
The Man Machine Language used in a Cisco MGC software.
network access server.
Node Name Link.
Non-Intercompany Settlement System
Numbering Plan Area.
Own Point Code.
See Cisco PGW 2200 PSTN Gateway.
The Sun computing platform on which the MGC software application resides, providing call control or switching functionality. Each host controls a unique subset of the media gateways, that is, trunking gateways, access gateways, network access servers. PGW hosts are deployed in pairs for redundancy. Fault tolerance is achieved by checkpointing call context information between active and standby hosts. All stable calls are preserved in case of a switchover from one host to the other.
Primary Interexchange Carrier.
plain old telephone service. A term used to distinguish traditional human-to-human telephony services from other uses of the telephone circuits, for example, computer-to-computer data transmission over modem.
Primary Rate Interface.
public switched telephone network.
QoS Packet network
An IP or ATM bearer network for voice/data and signaling traffic transport through the virtual switch. The Control Signaling Network runs over the QoS Packet Network along with the bearer traffic.
Service Control Point.
Signaling Link Terminal
Signaling Link Terminal.
See Cisco SLT.
Simple Network Management Protocol.
Signaling System#7. This signaling system is gradually replacing older systems globally.
Signal Transfer Point.
time-division multiplexing. In PSTN digital circuits, signals are multiplexed through the use of time slices, rather than different frequencies, phase shifts, or codes (FDM, PSK, CDM).