PCB

Printed Circuit Board

PR

Polarity Reversal

PS

Provisioning Server

PSQM

Perceptual Speech Quality Measurement (1-5, the lower the better)

PSTN

Public Switched Telephone Network

NAT

Network Address Translation

OOB

Out-of-band

REQT

(SIP) Request Message

RESP

(SIP) Response Message

RSC

(SIP) Response Status Code, such as 404, 302, 600

RTP

Real Time Protocol

RTT

Round Trip Time

SAS

Streaming Audio Server

SDP

Session Description Protocol

SDRAM

Synchronous DRAM

sec

seconds

SIP

Session Initiation Protocol

SLIC

Subscriber Line Interface Circuit

SP

Service Provider

SPA

Sipura IP Telephone

SSL

Secure Socket Layer

TFTP

Trivial File Transfer Protocol

TCP

Transmission Control Protocol

UA

User Agent

uC

Micro-controller

UDP

User Datagram Protocol

URL

Uniform Resource Locator

VM

Voice Mail

VMWI

Visual Message Waiting Indication/Indicator

VQ

Voice Quality

WAN

Wide Area Network

XML

Extensible Markup Language

1.1.Glossary

ACD (Automatic Call Distribution): A switching system designed to allocate incoming calls to certain positions or agents in the order received and to hold calls not ready to be handled (often with a recorded announcement).

Area Code: A 3-digit code used in North America to identify a specific geographic telephone location. The first digit can be any number between 2 and 9. The second and third digits can be any number.

Billing Increment: The division by which the call is rounded. In the field it is common to see full- minute billing on the local invoice while 6-second rounding is the choice of most long-distance providers that bill their customers directly.

Blocked Calls: Caused by an insufficient network facility that does not have enough lines to allow calls to reach a given destination. May also pertain to a call from an originating number that is blocked by the receiving telephone number.

Bundled Service: Offering various services as a complete package.

Call Completion: The point at which a dialed number is answered.

Call Termination: The point at which a call is disconnected.

CDR (Call Detail Records): A software program attached to a VoIP/telephone system that records information about the telephone number’s activity.

© 2003 - 2005 Sipura Technology, Inc

Proprietary (See Copyright Notice on Page 2)

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Sipura Technology SPA-841 manual Pcb