HA

High Availability

High Availability refers to a system or component that operates on a continuous basis by utilizing redundant connectivity, thereby circumventing unplanned outages.

HAL

Hardware Application Layer

Hardware Platform Interface

See HPI

HBA

Host Bus Adapter

A hardware interface added to a host to gain access to shared storage (for example, the Fibre Channel mezzanine card added to some host blades in an HP c-Class system).

HC-Blade

High-Capacity Blade

HCAP

High-Speed Communications and Applications Processor

HCB

High-Capacity Blade

A DCM-like card with a Pentium 4 CPU running at 2.4 GHz, 256 MB-4,096 MB DDRAM, ATA storage, and so on.

HC-DCM

High Capacity Data Communications Module.

HCDR

Huawei comma-separated values CDR format.

HC-MIM

High Capacity Multi-Channel Interface Module

A card that provides access to eight E1/T1 ports residing on backplane connectors A and B. Each data stream consists of 24 T1 or 31 E1 DS0 signaling links assigned in a time-division multiplex (TDM) manner. Each channel occupies a unique timeslot in the data stream and can be selected as a local signaling link on the interface card. Each card has 8 E1 or 8 T1 port interfaces with a maximum of 64 signaling links provisioned among the 8 E1/T1 ports.

HDB3

High Density Bipolar 3 Encoding

HDD

Hard Disk Drive

HDI

High Density Interconnect

HDLC

High Level Data Link Control

HECI

Human Equipment Communication Interface

HIDS

Host Intrusion Detection System

High Availability

See HA.

High Capacity Multi-Channel Interface Module

See HC-MIM

High Speed IMT Packet Router

See HIPR

High-Speed Multiplexer

See HMUX

HIPR

High-Speed IMT Packet Router

A card that provides increased system throughput and traffic capacity. HIPR moves EAGLE from an intra-shelf ring topology to an intra-shelf switch topology. HIPR acts as a gateway between the intra-shelf IMT BUS, running at 125Mbps, and the intershelf operating at 1.0625Gbps. The HIPR card will seat in the same slot as an HMUX card (slots xx09 and xx10 of each shelf).

HIPR2

High-Speed IMT Packet Router 2

A card that provides increased system throughput and traffic capacity on the existing Fibre-Channel ring. A high rate Fibre-Channel option of 2.5 Gbps is available when an EAGLE is provisioned with all HIPR2 cards. In a mixed topology where a HIPR2 is used in an EAGLE along with HMUX and HIPR, the Fibre-Channel ring runs at the lower rate of 1.0625 Gbps.

HLD

High Level Design

HLR

Home Location Register

A component within the Switching Subsystem of a GSM network. The HLR database is the central database within the GSM architecture. This is where information about the mobile communications subscribers who are assigned to a specific location area is stored. The subscriber data is used to establish connections and control services. Depending on the network size, the number of subscribers and the network organization, a number of HLRs can exist within a GSM network.

HLRR

HLR Router

HMDC

Message Handling Discrimination

HMDT

Message Handling Distribution

HMI

Human-to-Machine Interface

HMRT

Message Handling Routing

HMU

Hide Media Update

HMUX

High-Speed Multiplexer. A card that supports the requirements for up to 1500 links, allowing communication on IMT buses between cards, shelves and frames. HMUX cards interface to 16 serial links, creating a ring from a series of point to point links. Each HMUX card provides a bypass multiplexer to maintain the ring’s integrity as cards are removed and inserted into an operational shelf.

High-Speed IMT Multiplexer. A replacement card for the IPMX.

Home Network

This is the network that is to be updated to include an EAGLE.

Home Realm

The administrative domain with which the user maintains an account relationship.

HOMERN

Home Network Routing Number prefix.

Home SCP

An SCP that is located in the customer’s own network.

Hop

An intermediate connection in a string of connections linking two network devices. On the Internet, for example, most data packets need to go through several routers before they reach their final destination. Each time the packet is forwarded to the next router, a hop occurs. The more hops, the longer it takes for data to go from source to destination. You can see how many hops it takes to get to another Internet host by using the PING or traceroute utilities.

Horizontal Scaling

Adds or removes VMs in a VNF.

See scaling

Host

Addressable endpoint.

In an HP c-Class system, a computer system running TPD.

In DSR, a system that can support multiple Diameter Nodes.

Host Volume

A Volume as seen by a host at a particular mount point and with a particular file system format.

Hostname

Unique name assigned to a host that identifies it on a network.

Hot-Swappable

The ability to remove and replace components of a machine (such as a computer) without turning the machine off. Also known as hot-plugging.

HP

Hewlett-Packard

H-PCRF

Home PCRF

HP c-Class

A blade-based system sold by Hewlett Packard for the enterprise market.

Blades are cards that function, essentially, as independent servers. Depending on the task(s) they perform, blades can be categorized as switch blades, storage blades, or compute blades (also referred to as application server blades).

HP DL360 G5

The HP Proliant DL360 G5 1U rack mounted server.

HPI

Hardware Platform Interface

A protocol that provides an abstracted interface to manage computer hardware. The specification for HPI was developed by SAF to separate the hardware from management middleware, making each independent of one another.

HPI-to-ATCA Mapping Specification

Specification developed by SAF that standardizes how two specifications should be implemented together (in this case, HPI and ATCA). This specification provides developers and engineers with a standard method in which to access functionality in both of the specifications.

HPLMN

Home Public Land Mobile Network

The PLMN in which a subscriber’s profile is held.

HPM

HLR Provisioning Manager

HPOV NNM

Hewlett Packard Open View Network Node Manager

HR

Home Routing

Routing rule that is evaluated when a positive SRI-SM response will be sent to the external SMSC.

HRN

Home Routing Number

HRPD

High Rate Packet Data

HS

High Speed

HSGW

High Rate Packet Data Serving Gateway

Provides inter-working between an HRPD access node and a Packet Data Network Gateway (PGW). An HSGW ensures converged mobility management between HRPD and LTE networks.

HSL

High-Speed Link

An innovative distributed I/O technology designed for automation applications that is based on an open standard RS-422, which is designed for full/half-duplex, multidrop serial transmission.

HSOP

High Speed Operation Protocol

HSPA+

Evolved High-Speed Packet Access

Enhances the widely used WCDMA based 3G networks with higher speeds for the end user that are comparable to the newer LTE networks.

HSS

Home Subscriber Server

A central database for subscriber information.

HSU

HMUX Signal Unit

HTTP

Hypertext Transfer Protocol

HUB

Works with the Router to manage traffic to and from SMS applications.

HW

Hardware

HWM

High Water Mark

Hypervisor

A program that manages multiple operating systems, or multiple instances of the same operating system, running on a single hardware system.

Hz

Hertz