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Avaya Telephone System

Telecommunications Consulting
Call Barring
Caller Display
Call Intrusion/Call Pickup
Call Waiting
Hot Desking
Parking Calls
Ring Back When Free/ Callback
Message Waiting Indication
Ring Tones
Music on Hold (MOH)
How the System Receives Time
The 'No User' User
DND, Follow Me and Forwarding
Do Not Disturb (DND)
Follow Me
Forward Unconditional
Forward on Busy
Forward on No Answer Determining a User's Busy Status
Chaining and Loops
Transferring Calls
Off-Switch Transfer Restrictions
Overview of Hunt Groups
Hunt Group Types
Call Presentation
Hunt Group Member Availability
Using Queuing
Hunt Group Overflow
Hunt Group Voicemail
Hunt Group Examples
Conferencing Overview
Short Codes
Short Code Fields and Characters
User Dialing
Application Dialing-Secondary Dial Tone
Line Short Codes
Least Cost Routing Overview
Short Code Matching Examples
Short Code List
Overview of Data Routing
Establish ISDN Internet Connection
ISDN Link Between IP Offices
Using a Dedicated T1/PRI ISP Link
Direct Remote Access
Creating a VoIP Link via the WAN Port Using PPP
Create VoIP Link via WAN Port Using Frame Relay
Overview of VoIP
VoIP Protocols-Performance
Small Community Networking
Enabling Small Community Networking
SCN Short Codes
Connecting a Transactional Pad
Paging / Universal Paging Access Module
Paging via an Analog Extension Port
Paging via an Analog Extension Trunk
Making Page Calls
Paging Via Voicemail Pro
Dial By Name
Using Dial by Name
Country Locales
VoIP Implementation
Hot Desking
IP Office Manager Pt.1

IP Office Manager Pt.2


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Avaya IP Office

The Avaya IP Office platform is the ultimate in converged voice and data technology. IP Office brings a combination of voice and data applications formerly reserved for only the largest corporations. Cutting edge customer service with easy to use tools is now available to the smallest of businesses.






A Control Unit plays the part of a Gateway between H.323 terminals and phones connected to the Control Unit (and also external lines). H.323 is configured on a Control Unit as a VPN line, specifying the IP address of a remote gateway and the audio compression to be used.

IP phones can be configured as extensions. An example is NetMeeting, which is configured to use the Control Unit as a Gatekeeper, with an account name that should match the name of a user configured on the Control Unit.

IP extensions are automatically created when an IP phone registers with the Gatekeeper (depending on a configuration option). If the user is not found a new user and extension are created, allowing the phone to be used immediately.

Basic call setup
(without a Gatekeeper)

  • Call setup using H.225.0 encapsulated in Q.931 messages

  • Capability exchange using H.245

  • Establishment of audio communication using H.245 OpenLogicalChannel

  • Audio using RTP/RTCP


Fast connect procedure

  • Call setup using H.225.0 in Q.931 messages, with H.245 OpenLogicalChannel messages embedded in the H.225.0 messages

  • Audio using RTP/RTCP


Overlap sending

  • Support for overlap sending, where a SetupAck is sent in response to the Setup message


  • Gatekeeper support allows IP extensions to be automatically configured when they register with the gatekeeper.

Jitter buffer

  • 5 frames of jitter buffer

Quality of Service

  • Layer3 - DiffServ TOS Field set to DSCP 6 on generated packets. WAN links optimize for this traffic when set to "PPPSyncVoice". At present normal LAN and normal ISDN traffic is not prioritized.

  • Layer4 - UDP Port Marking - all RTP/UDP traffic is sent within UDP port range of C000-CFFF (hex) (49152-53247)


Voice Packet Payload Sizing/Latency (Default)




Transparent 64K G711









G.711 ALAW






G.723 (6K3)



Netcoder 8K


























































































































































































































































































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