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IP Office Product Description

IP Office 4.2

Page 102

Issue 18.b.- (08 July 2008)

Direct Inward Dialing (DID/DDI)

This relies on the local telephone exchange passing all or part of the dialed number to the IP Office. This

number can then be used by IP Office call routing software to route the call to an individual phone, or groups

of phones. This service is typically used to reduce the workload on a reception position by giving members of

staff or departments individual numbers so they can be called directly. For convenience it is common to have

the extension or group number the same as the digits supplied from the network, but IP Office can convert the

number to what ever number is needed by the business, within limits

In North America, T1 circuits are required for DID.

Transfer

Call Transfer allows users to transfer a call in progress to another phone number – either internal extension or

external public number. The caller is placed on hold while the transfer is performed.

If the phone is put down before the destination has answered, the original caller will be automatically

transferred. This is called an Unsupervised or Blind Transfer. Alternatively, a user can wait for the destination

to be answered and announce the transfer before hanging up to complete the transfer. This is called a

Supervised Transfer.

Unless restricted by the system administrator, the IP Office makes no differentiation between internal or

external call transfers.

Distinctive and Personalized Ringing

The IP Office uses different ringing sequences to indicate the type of call, for example whether internal or

external. This feature is called 'distinctive ringing'. For analog phones the distinctive ringing sequences used

are adjustable. For digital and IP phones the distinctive ringing sequences are fixed as follows;

· Internal Call: Repeated single-ring.

· External Call: Repeated double-ring.

· Ringback Call: Single ring followed by two short rings.

This ring is used for calls returning from park, hold or transfer. It is also used for call back when free and

voicemail ringback calls.

This feature is supported across the IP Office Small Community Network

Personalized Ringing

In IP Office the term personalized ringing is used to refer to changing the sound or tone of a phone's ring. On

many Avaya digital phones, the ringer sound can be personalized. Changing the ringer sound does not alter

the ring sequence used for distinctive ringing. This feature is local to the telephone and not supported on all

types of telephones.

Message Waiting Indication

Message waiting indication (MWI) is a method IP Office uses to set a lamp or other indication on compatible

telephones when a new message has been left for the user, either in a personal voice mailbox or in a group

mailbox or call back message. When the message has been played or acknowledged, the lamp is turned off.

All Avaya digital and IP phones all have in-built message waiting lamps, and the IP Office Phone Manager

application provides message waiting indication on screen

For analog phones, from IP Office 3.1 a variety of analog message waiting indication (MWI) methods are

provided. Those methods are 51V Stepped, 81V, 101V and Line Reversal. The MWI method must be selected

from the IP Office Manager application when configuring a system to match the properties of the analog

phones. Note that the 101V signaling is only available on IP500 Phone cards and modules plus version 2 IP400

Phone 8, 16 and 30 modules, not on the IP406 system unit.

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