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Appendix AParameter configuration for a SIP URIContents This section contains information about the following topics:
"Introduction" (page 103)
"Example" (page 103)
"Phone-context strings" (page 104)
"Phone-context strings for public numbers" (page 104)
"Phone-context strings for unknown numbers" (page 105)
"Phone-context strings for private numbers" (page 105)
IntroductionThe SIP phone-context parameter qualifies a DN beyond the usual
Numbering Plan Identifier (NPI) and Type of Number (TON).In addition to
the NPI/TON, the phone-context parameter includes unique identification of
the scope for which the number is valid.
Example If a CDP number is dialed within the Site1 CDP domain of the
COMPANYABCnetwork and the call must be routed at the network level (by
a network router such as a CS 1000 Redirect Server or MCS 5100 Proxy
Server), then the number must be qualified with a phone-context parameter
that incorporates the following:
•NPI = Private
•TON = CDP
•Enterprise ID = companyabc.com
•CDP Domain ID = Site1
These elements must be combined such that the resulting string is globally
unique.
Nortel Communication Server 1000
Communication Server 1000 to MCS 5100 ConvergedDesktop Type 2 Configuration Guide
NN43001-321 01.05 Standard
Release 5.0 15 February 2008
Copyright© 2005-2008, Nor tel Networks
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