Voice over IP gateway connectivity 

---

Avaya, Inc. discontinued the Internet Telephony Gateway (ITG) on December 4, 2000; therefore, customers can no longer purchase an ITG. However, prior to December 4, 2000, customers could purchase the ITG to provide VoIP gateway functionality.

ITG connectivity to CentreVu Internet Solutions

The ITG is connected to the CentreVu Internet Solutions subnet through 10BASE-T or 100BASE-T Ethernet. This connection allows the ITG to communicate with the ICM server, the CentreVu Computer-Telephony/Message Care server, and the customer's PC (for Internet Voice calls).

ITG connectivity to the DEFINITY ECS

Through one or two ISDN-PRI connections (depending on the ITG configuration purchased), the ITG provides �PSTN-like� connectivity to the DEFINITY ECS contact center. The ISDN-PRI connections are generally cabled from the DEFINITY ECS DS1 card (through a 356A adapter) directly to the ITG using a D8W (8-conductor) cable. If the distance exceeds the supported range, Channel Service Units (CSUs) may be required.

Requirements for this type of connection include the following:

• One ISDN-PRI DS1 circuit pack per ISDN-PRI (TN464 or TN767, depending on system type and configuration). If you are using an E1 line, then the DEFINITY ECS requires a TN464 circuit pack and the hardware switch on the circuit pack must be set to 32.

• One 356A adapter per ISDN-PRI (if the ITG and DEFINITY ECS are co-located within direct cabling distance). See the DEFINITY Communications System Implementation document for details. Otherwise, Channel Service Units (CSUs) must be used on both the DEFINITY ECS side and the ITG side, along with appropriate cabling for the DEFINITY ECS-to-CSU connection and the ITG-to-CSU connection.

• ISDN-PRI must be enabled on the DEFINITY ECS.

ITG and the Remote Maintenance Board (RMB) connectivity

The ITG also requires a direct-dialed analog line from the DEFINITY ECS for the Remote Maintenance Board (RMB). This line can be provided from the DEFINITY ECS or through a dedicated line from the local exchange carrier. This connection allows off-site engineers to provision, upgrade, and troubleshoot the ITG.

Planning an ITG server configuration

The ITG is equipped with Voice Processor Cards, an ISDN-PRI interface card (supporting one or two T-1 or E1 network connections), an Ethernet 10/100 Network Interface Card (NIC), and an RMB. Environmental requirements and technical specifications are available in the Internet Telephony Gateway Technical Reference Issue 2 (555-027-212) document.

ITG server requirements are as follows:

• The location of the ITG server should allow a half-duplex Ethernet 10BaseT or 100BaseT connection to your TCP/IP LAN. The ITG Server must be able to communicate with the ICM server and CentreVu Computer-Telephony/Message Care server.

• There must be access to the Internet (probably through your corporate firewall) from the ITG server. Avaya can help you plan your firewall configuration to maintain your secured corporate network.

• A CD-ROM drive must be accessible to the ITG and ICM server.

• A direct-dialed analog line is required for the RMB so that Avaya can provide remote maintenance support.

• The DEFINITY ECS must support ISDN-PRI and have DS-1 card(s) available to connect to the ITG Server.

• Each ITG is configured to support real-time software based configurations supporting up to 60 Internet voice sessions.

Refer to theInternet Telephony Gateway Technical Reference Issue 2 (555-027-212) document for detailed information about configuring the ITG. Your Avaya Account team can also help you configure the ITG server in accordance with your business' unique needs and requirements.

IP600 connectivity to the ICM server

There is no direct cable connection between an IP600 gateway and the ICM server.

IP600 connectivity to the DEFINITY ECS

Requirements for IP600 connection to the DEFINITY ECS include the following:

• One ISDN-PRI DS1 circuit pack per ISDN-PRI (TN464 or TN767, depending on system type and configuration). If you are using an E1 line, then the DEFINITY ECS requires a TN464 circuit pack and the hardware switch on the circuit pack must be set to 32.

• One 356A adapter per ISDN-PRI (if the IP600 and DEFINITY ECS are co-located within direct cabling distance). See the DEFINITY Communications System Implementation document for details. Otherwise, Channel Service Units (CSUs) must be used on both the DEFINITY ECS side and the IP600 side, along with appropriate cabling for the DEFINITY ECS-to-CSU connection and the IP600-to-CSU connection.

• ISDN-PRI must be enabled on the DEFINITY ECS.

IP600 maintenance connectivity

Refer to Maintenance for DEFINITY ONE Communications System Release 9 and Avaya IP600 Internet Protocol Communications Server, Issue 4 (555�233�111).

IP600 configuration

Refer to Installation and Upgrade for DEFINITY ONE Communications System Release 9 and Avaya IP600 Internet Protocol Communications Server, Issue 4 (555�233�109).

The DEFINITY IP Solutions VoIP gateway is based on C-LAN and IP Media Processor circuit packs that reside in the contact center's DEFINITY ECS. Refer to DEFINITY ECS Release 9 Administration for Network Connectivity, Issue 2 (555�233�504) .