Chapter 13 Voice Over IP (VoIP)

H.323 Features

The following service features are available when connecting with H.323 terminal (NEC product). For other vender products, confirmation test is required.

 

 

H.323 Features

 

Call Forwarding-All Calls

 

Speed Calling-Station

 

 

 

 

 

Call Forwarding-Don’t Answer

 

Bearer Service

 

 

 

 

 

Call Forwarding-Busy Line

 

Tandem Switching of TIE Trunks-2/4-Wire

 

 

 

 

 

Split Call Forwarding

 

The Line Connection with PAD Control

 

 

 

 

 

Call Transfer-All Calls

 

Outgoing Trunk Busy Announcement

 

 

 

 

 

Hotline

 

Brokerage Hot Line-Outside

 

 

 

 

 

Do not Disturb-Dterm

 

Least Cost Routing-3/6-Digit

 

 

 

 

 

Calling/Called Number Display

 

LCR-Time of Day Routing

 

 

 

 

 

Digital Display-Trunk

 

Attendant Manual Override

 

 

 

 

 

Speed Calling-System

 

Echo Canceller Control

 

 

 

 

Service Conditions for H.323

 

 

1.The data network used for H.323 must be a corporate Intranet.

2.Gatekeeper is required for H.323 network.

3.IP trunk cards must be connected with a corporate Intranet via a router.

4.CCIS feature key FD is required.

5.Maximum number of nodes in the network depends on the capability of the Gatekeeper.

6.Maximum one IP trunk card can be accommodated per PIM and maximum eight IP trunk cards per system.

7.Maximum voice channels per IP trunk card depends on the payload period as follows (payload period can be assigned in system programming):

 

Payload Period

 

 

Maximum Voice Channels per IP Trunk

 

 

 

 

G.729a

 

 

G.711

 

 

G.723.1

 

 

 

 

 

 

 

 

 

 

 

20 ms

 

6

 

5

 

 

 

 

30 ms

 

8

 

7

 

8

 

 

40 ms

 

12

 

10

 

 

 

Note: Maximum 96 channels can be provided per system

8.The same IP trunk card cannot be shared with CCIS network via IP and H.323.

9.Tone signals to an extension are provided by the system.

10.When a LAN cable is unplugged from the IP trunk card, the associated calls are disconnected.

11.When connected with the system by other manufacturer, a pre-connection test is required.

12.DTMF Relay is supported.

UNIVERGE NEAX 2000 IPS Request for Proposal (RFP) Reference Guide

Page 13- 19

Issue 6

 

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NEC 2000 IPS manual Features, Service Conditions for H.323