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IP Extensions in OE 4.0

One of the key features introduced in AltiWare OE 4.0 is the IP Extension. In this document, we

explore this feature in detail. We will present the technical details such as what devices to choose

and how to configure them to get this feature to wok properly. This document also describes the

GateKeeper service.

1. What is an IP Extension?

Before the release of OE 4.0, AltiServ supported only one type of extensions - the analog

extensions. By extension here, we mean the station or the type of phone used by users of an

AltiServ system. All the features of the system were accessible from any standard analog phone

by using the DTMF keys. For example, from your extension, you can press '##' and access your

voicemail. If you have a sophisticated phone on your desk, you can get features like caller ID,

caller name, message waiting light, etc.

Even though the analog phones are good devices that help run a business using AltiServ, they

have a few drawbacks:

• All the extensions for a system should be physically in the same location

• Dedicated wiring is required to connect these extensions to the system.

IP Extensions solve these problems. IP extensions are the devices that have only data networking

connection such as an Ethernet 10-Base-T (RJ-45) and they communicate with the AltiServ

system using IP-based protocols for signaling as well as voice. In OE 4.0, AltiServ supports only

those devices that are based on H.323 protocol. By having only an IP-based virtual connection

instead of a physical cable connection, IP extensions can be virtually anywhere on the Internet

and still behave as an extension on the AltiServ system. To support such remote extensions, no

special wiring is needed.

One downside to such an IP extension is the fact that voice is compressed and sent as packets

over the network. This can result in latency (due to compression and network delays) as well as

inferior voice quality. But, due to the advances made in the field of voice compression algorithms

and network protocols such as RSVP, these issues can be addressed.

2. How does it work?

From a user's perspective, an IP Extension works exactly the same way an analog extension with

the added advantage of being able to work remotely and without any cabling requirements.

2.1. Logging in and out

Once the system administrator has set up your extension for use as an IP extension, you have the

ability to turn any AltiGen certified IP phone into your extension as long as the device has a data

connection to the AltiServ system. If your extension has been configured to use Dynamic IP

Address, you should first login to your IP extension before you start to use it and when you no

longer wish to receive calls on the IP phone, you should logoff. These procedures are described in

detail below:

To turn an IP phone into your extension, you should first initiate a call to the AltiServ system by

dialing the IP address of the AltiServ system. Typically, the system will answer with the auto-

attendant. You should login to your voicemail box (typically by pressing '#'). Once in your

Summary of content (11 pages)

PAGE 1
IP Extensions in OE 4.0 One of the key features introduced in AltiWare OE 4.0 is the IP Extension. In this document, we explore this feature in detail. We will present the technical details such as what devices to choose and how to configure them to get this feature to wok properly. This document also describes the GateKeeper service. 1. What is an IP Extension? Before the release of OE 4.0, AltiServ supported only one type of extensions - the analog extensions.
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voicemail, go to the Personal Options by pressing '4'. In the Personal Options menu, a new item has been added in OE 4.0 (option '8') that will enable IP extension at the IP address you are calling from. After enabling the IP extension using this menu option, hang up. From this point on, any calls to your extension will be routed to this IP phone. Similarly, all calls you make from this phone will be treated as calls originating from your extension.
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2.5. Features Not Supported It is important to note that there are a few features that are not accessible from the IP Extensions. They are: • #81 (Hands free - Intercom mode) • #82 (Hands free - Manual answer mode) • Distinctive ringing (double ring for internal calls, single rings for external calls) 3. System Requirements In order to support the IP Extension feature, the AltiServ system as well as the IP extension user's environment have to meet several requirements. 3.1.
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1. First, create a virtual extension for each IP Extension user and configure all the standard settings such as Call Restriction, Voicemail options etc. You can create this extension as a physical extension as well. 2. In the General tab of Extension Configuration, there is a checkbox called Enable IP Extension. Check that box. 3. You have two options to enable IP extensions: a.
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4.2.1.1. PhoneJack PCI The PhoneJack PCI card is a PCI-based short form card that plugs into any standard desktop PC. It works under Windows 95, 98 and NT operating systems. Note that Windows 2000 is not supported in version 3.2 (Quicknet plans to support Windows 2000 in their 4.0 software release). Install the card and the Internet SwitchBoard software as indicated in the Installation Manual that comes with the PhoneJack. Connect a standard analog phone such as the Aastra 9316CW to the PhoneJack.
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answer with the AutoAttendant. You will need to activate your IP extension as described in section 2.1. Leave the other configuration parameters of the Internet Switchboard as default values. One parameter you may have to change is the compression codec to be used – by default, you should go with G.723.1 with 30ms jitter buffer setting, but for some reason if you are not getting a good quality voice connection, you can experiment with different jitter buffer settings or with G.711 codec.
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item, press the √ button. To back up to the previous menu or to cancel the current operation, press the ⊗ button. Administration menu All the user level settings are accessible from the configuration menus, but the system level settings found in a menu called the ‘Administration menu’ are protected by a password. In order to access this menu (Service=>Administration), 1. You need to go to Service=>End menu, 2. then press *6 from the number keypad. 3. You will be prompted for a password.
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• • • • In the Service=>Administration=>System menu, set E164 Address to your extension number. In the Service=>Administration=>Speech menu, set Jitter buffer to Normal In the Service=>Administration=>Speech menu, set Audio mode to G723 Preferred In the Service=>Administration=>Date/Time menu, set SNTP IP addr to the IP address of a public domain SNTP (Simple Network Time Protocol) server (e.g. 209.81.9.7) and set the Timezone offset to the appropriate value for your location.
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branch office and configure its AltiServ IP address to be the IP address of the AltiServ system at the main office. Programming the buttons Each of the 16 programmable buttons on the LP5100 can hold two functions – one in shifted mode and the other in non-shifted mode. One of the buttons can be programmed as the Shift key itself. Out of the box, some of the LP5100’s programmable buttons come pre-programmed with certain functionality. For example, the top left button is programmed to be the speaker button.
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Configuring from a browser Most of the settings above can be done from a standard web browser. From any standard web browser, enter the IP address of the phone as the URL. You will get the home page of the LP5100 phone. The password expected to do configuration changes is the same password you use to enter the Administration menu on the phone. Navigating through the configuration settings from a browser should be straightforward. So, we will not go into details here. 4.2.2.2.
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5. Which device should I use? The answer to this question really depends upon the customer's environment, their requirements and the amount of money they are willing to spend. 5.1. NetMeeting? If price is the biggest factor, then NetMeeting is your answer. The only thing you will need to buy is the headset, which should cost less than $50.