WLAN 2200 Series - WLAN IP Telephony solution

Voice over WLAN (VoWLAN), also known as WLAN IP Telephony technology, enables people to roam and be in touch using WLAN Handsets no matter where they are in the campus. It gives people the ability to stay in constant contact, cover more ground,
answer questions quickly, and make faster decisions. They can easily stay in touch with customers, co-workers, clients, and suppliers. Communication is streamlined and business moves more quickly.

WLAN IP Telephony can enhance the productivity and improve customer satisfaction for workers in many job functions, including:

Sales and service: When account managers and sales personnel carry WLAN Handsets, customers and clients can reach them to place orders or ask questions immediately without the frustration of being put on hold while staff are located.

Result: Improved customer satisfaction and increased sales.

Technical support: When there is a computer or information systems problem, technical support staff can be reached immediately on their WLAN Handsets, anywhere in the complex.

Result: Response times are faster, downtime is reduced, and costly delays are eliminated.

Maintenance: Maintenance personnel spend most of their time out on the enterprise campus, but with WLAN Handsets they can be reached instantly to investigate and resolve problems, and respond to emergencies.

Result: Improved customer satisfaction.

How VoWLAN works

WLAN Handsets reside on the Wireless LAN with other wireless devices using Direct Sequence Spread Spectrum (DSSS) radio technology. They operate over an 802.11b wireless Ethernet LAN providing users with a WLAN IP Telephony extension, sending and receiving packets at up to 11 Mbps. By seamlessly integrating with the infrastructure IP Telephony system, Wireless Handset users are provided with high-quality mobile voice communications throughout the workplace.

Solution components

Nortel Networks WLAN 2200 Series WLAN IP Telephony solution emulates the features of Nortel Networks i2004 Internet Telephony and provides voice communications to areas where no desk phone can reach. The solution is designed to support a broad range of enterprise applications, from general office to industrial environments.

The solution is comprised of a number of components:

Nortel Networks WLAN Handset 2210 - A lightweight, durable handset, specifically designed for mobile workplace use within a facility using the supported Nortel Networks IP Telephony Call Servers and 802.11b Access Points (APs) in a Wireless LAN.

The WLAN Handset can receive calls directly, receive transferred calls, transfer calls to other extensions, and make outside and long distance calls (subject to the restrictions applied in your facility). The WLAN Handset is solely for use on-premises; they are not cellular or satellite phones. It has a standby time of 40 hours and talktime of up to four hours.

Nortel Networks WLAN Handsets are extremely simple to use, require minimal training, and are durable enough to withstand the rigors of workplace use. The rugged monolithic design has no moving parts or external antenna so there is nothing to break or come loose. A complete set of accessories is available, including headsets, chargers, and carrying cases.

The WLAN Handset 2210 has similar features to Nortel Networks i2004 Internet Telephone,
including:

In addition, it supports Wired Equivalent Privacy (WEP) as defined by the 802.11b specification.

Nortel Networks WLAN Handset 2211- Engineered for demanding environments, the industrial-grade durable design has all the features of the WLAN Handset 2210, in addition to push-to-talk (PTT) functionality which allows broadcast communication between employees, eliminating the need for two-way radios or walkie talkies. The PTT functionality uses IP multicast addresses, requiring that multicasting be enabled on the subnet. To reduce the effects of broadcast and multicast traffic from devices in other network segments, the Wireless LAN can be placed on a separate VLAN or subnet. Both the WLAN Handset 2210 and 2211 offer more than just telephone communication.

Utilizing Open Application Interface (OAI), the WLAN Handsets can function as two-way messaging devices, allowing integration with other enterprise systems to provide mobile workers with access to critical information.

Nortel Networks WLAN IP Telephony Manager 2245 - A network appliance that works with the AP to provide Quality of Service (QoS) on the Wireless LAN. UNIStim is a proprietary protocol developed by Nortel Networks for communication between a Nortel Networks IP phone and a Nortel Networks Call Server. All UNIStim packets to and from the WLAN Handsets 2210 and 2211 pass through the IP Telephony Manager 2245 and are encapsulated for prioritization as they are routed to and from the supported Nortel Networks IP Telephony solution.

The WLAN IP Telephony Manager 2245 is required for QoS because the current IEEE 802.11b standard provides no mechanism for differentiating audio packets from data packets. The new standard being developed (802.11e) will provide all the functionality of the IP Telephony Manager 2245, thus ensuring high-quality voice in a mixed client environment. Once 802.11e is ratified, Nortel Networks will adopt the new specification.

Nortel Networks Application Gateway 2246 - An OAI that enables third-party software applications to communicate with Nortel Networks WLAN Handsets 2210 and 2211. OAI is a messaging protocol interface that is open to any developer. Many applications are currently integrated with OAI, and others are continuously being developed to meet specific vertical market needs. Nortel Networks offers a developer’s package that provides the software necessary to easily integrate and test applications.

In order for the WLAN IP Telephony solution to function, several other components are required in the network:

Nortel Networks Call Servers - Nortel Networks Succession* 1000 or Meridian 1* Call Servers running Succession 3.0 software or later are required as the call server interface. The WLAN Handsets communicate with the Call Server using the UNIStim protocol.

Access Points - Access Points and Access Ports provide the connection between the wired Ethernet LAN and the wireless (802.11b) LAN. Access points must be positioned in all areas where WLAN Handsets will be used. The number and placement of access points will affect the coverage area and capacity of the wireless system. Typically, the requirements for use of Nortel Networks WLAN Handsets are similar to that of wireless data devices.

TFTP Server - Required in the system to distribute software to the wireless telephones.

Applications

With Nortel Networks WLAN IP Telephony solution, enterprises can have fast access to
both people and machines with one easy-to-use handset. No matter what the business, through OAI an application can be created that keeps people informed, lets them react more quickly to situations, saves them time, and saves the company money.

The open nature of OAI means the potential business applications that can be developed are endless. The following are just some of the ways different businesses are using Nortel Networks WLAN Handsets to boost customer service and productivity.

Healthcare
When a patient pushes the emergency button beside the bed, an application can trigger a nurse's WLAN Handset to ring and show which patient is calling.

The nurse can push a button on their WLAN Handset and talk directly to the patient, or contact a physician and other team members while on the move, saving precious time.

WLAN Handset features

• Standby time = 40 hours
• Talk time up to four hours
• Superior voice quality on converged wireless networks
• Simple to operate without extensive training
• Provides all the features of a wired telephone set
• Soft-key feature access
• Supports digital and native IP interfaces to most major telephony switches
• Audible and vibrating ringers
• 802.11b standard-compatible
• Excellent voice quality on converged wireless networks
• UNIStim VoIP protocol support
• Text messaging support via OAI
• Push-to-talk mode (2211 only)
• Audible and vibrating ringers
• Integrated TFTP client
• DHCP or static IP addressing