Voice configuration, Introduction, Explanation of terms – Netopia 4752 User Manual
Page 53: Chapter 8 — voice configuration -1, Introduction -1, Explanation of terms -1, Chapter 8, “voice configuration
Voice Configuration 8-1
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This chapter describes the telephony ser vices and configuration of the Netopia 4752 SDSL Integrated Access
Device. For specific details on configuration and use of the Netopia 4752’s Internet connection, refer to
Chapter 9, “WAN and System Configuration.”
This chapter covers the following topics:
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“Configuring the Voice Features” on page 8-2
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The Netopia 4752 provides small and medium sized businesses with a complete Centrex PBX system. It
suppor ts voice call switching between the SDSL link and eight local extensions. Call management features can
include distinctive ringing, intelligent call for warding, Direct Inward Dial (DID), Caller ID, and hunt groups.
Impor tant key system features such as call hold, call transfer, and call waiting are all suppor ted.
Note: Since the Netopia 4752 is a Centrex-based IAD, specific voice features available to you via the Netopia
4752 will depend on the ser vices for which you contract with your ser vice provider.
The Netopia 4752 suppor ts up to eight telephone extensions and up to eight derived voice lines. Like the rest
of the 4700-series line, the Netopia 4752 includes the Netopia data routing engine for any number of attached
computers or other network devices connected to a single 10/100 Ethernet por t.
Key features include:
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Fax/Modem: Configurable Voice por t for incoming or modem calls. This is the secret term for echo
cancellation suppor t.
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Voice Gateway Interoperability: CopperCom, Jetstream, TollBridge Tdsoft, Zhone. General Bandwidth
suppor t to follow in an upcoming firmware release.
Centrex is a simpler variation on the PBX. It is a PBX with all switching occurring at a local telephone office
instead of at the company's premises. Typically, the telephone company owns and manages all the
communications equipment necessar y to implement the PBX and then sells various ser vices to the company.
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Some telephony terms mean different things in Centrex mode and PBX/local switching mode: Toll Restriction
and Speed Dial. Since the Netopia 4752 operates in Centrex mode, it may be useful for you to understand how
Centrex and local PBX work differently.
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Toll Restriction Operation - Centrex Mode: When you pick up the phone, you receive a dial tone from the
central office. When 9 is pressed, the Netopia 4752 detects 9 and returns a busy tone (locally generated).
Incoming calls are allowed. This allows local extension calling through the central office, but not long