Firewall, Wlan IP Telephony Manager | Nortel Networks MOG6xx

Firewall

In many installations there will be a firewall installed between the wired and wireless parts of the network. It is beyond the scope of this document to specify how a firewall is managed, but the following guidelines can be used when configuring firewalls:

•The TFTP Server, DHCP Server, and Syslog Server can be anywhere in the network (that is, they are not restricted to being in the same subnet as the handsets and WLAN IP Telephony Manager 2245). From an administrative point of view, it may be more convenient to place these components in the wired portion of the network. If a firewall is between the WLAN Handsets 2210/2211, and the WLAN IP Telephony Manager 2245 and the servers, the firewall will need to be configured to allow the TFTP (User Datagram Protocol [UDP] port 69 - bidirectional) and Syslog traffic (UDP port 514 - unidirectional) and a DHCP relay agent.

•When the WLAN Handsets 2210/2211 are hosted by a BCM, the following port numbers are used:

—UNIStim signaling uses UDP port 7000

—Media to and from the handset uses UDP ports 51000–51200.

Note: The media ports are configurable. The values shown above are the default values.

•If other Nortel call servers are used in the network (for example, BCM, MCS5100, CS2100), the system administrator will need to determine which UDP ports are used for Realtime Transport Protocol (RTP) and RTCP and make the appropriate provisions in the firewall.

•If third party gateways are configured in the system, the system administrator will need to determine which UDP ports are used for RTP and RTCP and make the appropriate provisions in the firewall.

•All media and signaling goes through the WLAN IP Telephony Managers 2245 (that is, it will all originate from one, or a few, Media Access Control [MAC] addresses). If the firewall is capable of filtering based on MAC address, the administrator can create a simple access control filter based on a small number of MAC addresses.

Note: For IP Telephony firewall information, refer to the Optional VoIP trunk configurations chapter in the 20XX IP Telephony Configuration Guide (N0008591). Also refer to the Configuring IP Firewall Filters chapter of the Programming Operations Guide (N0008589).

WLAN IP Telephony Manager 2245

The WLAN IP Telephony Manager 2245, also referred to as SVP II Server, is a device that manages IP telephony network traffic on the WLAN IP Telephony system. It is required in order to use the 11Mbit/s maximum transmission speed available in the WLAN Handsets 2210/2211. The WLAN IP Telephony Manager 2245 acts as a proxy for the WLAN handsets. It provides a number of services including a Quality of Service (QoS) mechanism, AP bandwidth management, and efficient Radio Frequency (RF) link use.

Overview

MOG6xx, MOG7xx specifications

Nortel Networks was a prominent player in the telecommunications industry, known for its innovative products and solutions. Among its offerings are the MOG6xx and MOG7xx series of voice over IP (VoIP) gateways, designed to enhance and facilitate voice communications over data networks.

The MOG6xx series, which includes models like MOG660 and MOG670, was introduced to serve as a bridge between traditional telephony and modern IP-based networks. These gateways feature advanced signaling and media capabilities that make them an essential tool for businesses looking to migrate to IP telephony. The MOG6xx series supports a wide range of protocols, including SIP, H.323, and MGCP, ensuring interoperability with various systems and devices.

One of the key characteristics of the MOG6xx series is its scalability. These gateways offer flexible capacity options that allow organizations to start with a smaller investment and expand as their communication needs grow. Additionally, the MOG6xx series is designed to support numerous simultaneous calls, ensuring that businesses can operate efficiently even during peak usage times.

The MOG7xx series, including the MOG770 and MOG730 models, builds upon the foundational technologies of the MOG6xx with enhanced features and capabilities. The MOG7xx series focuses on providing higher capacity and advanced functionalities, making it particularly suitable for larger enterprises or service providers. Key features include improved echo cancellation, advanced call routing, and enhanced security protocols to protect voice data from unauthorized access.

Both the MOG6xx and MOG7xx series leverage Nortel's expertise in voice quality assurance through integrated voice processing technologies. This ensures that calls maintain high audio quality, crucial for effective communication. Additionally, these gateways support various codecs to accommodate different network conditions, further enhancing their versatility.

In terms of management, both series are equipped with user-friendly interfaces and robust diagnostic tools that enable administrators to efficiently monitor and manage voice traffic. This not only simplifies troubleshooting but also assists in optimizing network performance.

Overall, the Nortel MOG6xx and MOG7xx series provide reliable, scalable, and flexible solutions for organizations looking to integrate voice communications with their data networks. Their support for industry-standard protocols, commitment to voice quality, and advanced feature set make them standout options in the increasingly competitive landscape of VoIP gateways.