[Standard - Nortel Networks Confidential]

Appendix B Understanding Telephony Routing and Translations 151

•A single COS value can be assigned to a list of routes, domain, subdomain or a subscriber.

•A domain, subdomain or subscriber has access to the routes if the COS value equal or higher is assigned to a list of routes.

•The domain based COS value is used to determine the telephony routes for incoming sessions from gateways or other SIP networks. In this scenario the domain will not host the originator of the call so the domain’s routing behavior is applied.

•If the From: header and Request URI: do not have the same domain, then the

domain specified in the Request URI: is used to determine the telephony routes.

•If the From:, To:, and Request URI: domains are the same, then the subscriber’s COS and the domain assigned to the subscriber is used to determine the telephony routes. If the user does not have any COS value then the domain’s COS value in which the user actually exists is applied.

•The same COS values can be assigned to a domain, subdomain and a subscriber. This allows or restricts a subscriber in the subdomain to access routes in the parent and other subdomains.

SIP Application Module routing stages

The following figure (Figure 95) shows the relationship between the telephony routing stages provided by the SIP Application Module. If the COS value of the subscriber and subdomain route do not match, then the parent and subsequent subdomains are checked for routes with the same, or higher, COS value.

SIP Provisioning Client User Guide

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Nortel Networks NN10043-113 manual SIP Application Module routing stages
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NN10043-113 specifications

Nortel Networks NN10043-113 is a versatile and robust networking solution designed to meet the demands of modern enterprise environments. As part of Nortel's extensive portfolio, this product highlights the company’s commitment to delivering high-performance networking solutions suitable for a variety of applications.

One of the main features of the NN10043-113 is its exceptional scalability. This device is designed to accommodate growing business needs, ensuring that organizations can expand their network without the hassle of significant infrastructure overhauls. The scalability of the NN10043-113 enables it to support a wide range of devices and applications, making it an ideal choice for businesses of all sizes.

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Moreover, the NN10043-113 features built-in Quality of Service (QoS) functionalities. This ensures that critical applications receive the bandwidth they need, prioritizing voice over data and guaranteeing seamless communication across the network. High availability is also a key characteristic, with redundant power supplies and failover capabilities to provide uninterrupted service.

The Nortel Networks NN10043-113 stands out with its management capabilities. Administrators can easily configure and monitor the device through a web-based interface, simplifying network management and reducing the chance of human error.

In summary, the Nortel Networks NN10043-113 is an advanced networking solution characterized by its scalability, high-performance Ethernet switching, robust security features, quality of service, and user-friendly management capabilities. These attributes make it a reliable choice for organizations seeking to enhance their network infrastructure while supporting their growth and security needs.
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