Version 6.6
353
Mediant 3000
User's Manual
23. Manipulation
23.8.3 Reason Header
The device supports the SIP Reason header according to RFC 3326. The Reason header
conveys information describing the disconnection cause of a call:
Sending Reason header:
If a call is disconnected from the Tel side (ISDN), the
Reason header is set to the received Q.850 cause in the appropriate message
(BYE/CANCEL/final failure response) and sent to the SIP side. If the call is
disconnected because of a SIP reason, the Reason header is set to the appropriate
SIP response.
Receiving Reason header:
If a call is disconnected from the IP side and the SIP
message includes the Reason header, it is sent to the Tel side according to the
following logic:
•
If the Reason header includes a Q.850 cause, it is sent as is.
•
If the Reason header includes a SIP response:
♦
If the message is a final response, the response status code is translated to
Q.850 format and passed to ISDN.
♦
If the message isn’t a final response, it is translated to a Q.850 cause.
•
When the Reason header is received twice (i.e., SIP Reason and Q.850), the
Q.850 takes precedence over the SIP reason and is sent to the Tel side.
23.9 Numbering Plans and Type of Number
The IP-to-Tel destination or source number manipulation tables allow you to classify
numbers by their Numbering Plan Indication (NPI) and Type of Number (TON). The device
supports all NPI/TON classifications used in the ETSI ISDN variant, as shown in the table
below:
NPI/TON Values for ETSI ISDN Variant
NPI
TON
Description
Unknown
[0]
Unknown
[0]
A valid classification, but one that has no information
about the numbering plan.
E.164 Public
[1]
Unknown
[0]
A public number in E.164 format, but no information
on what kind of E.164 number.
International
[1]
A public number in complete international E.164
format, e.g., 16135551234.
National
[2]
A public number in complete national E.164 format,
e.g., 6135551234.
Network Specific
[3]
The type of number "network specific number" is
used to indicate administration / service number
specific to the serving network, e.g., used to access
an operator.
Subscriber
[4]
A public number in complete E.164 format
representing a local subscriber, e.g., 5551234.
Abbreviated
[6]
The support of this code is network dependent. The
number provided in this information element
presents a shorthand representation of the complete
number in the specified numbering plan as
supported by the network.
Summary of Contents for Mediant 3000
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Page 27: ...Part I Getting Started with Initial Connectivity...
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Page 41: ...Part II Management Tools...
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Page 103: ...Part III General System Settings...
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Page 113: ...Part IV General VoIP Configuration...
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Page 275: ...Part V Gateway and IP to IP Application...
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Page 399: ...Part VI Session Border Controller Application...
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Page 465: ...Part VII Stand Alone Survivability Application...
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Page 497: ...Part VIII IP Media Capabilities...
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Page 515: ...Part X Maintenance...
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Page 565: ...Part XI Status Performance Monitoring and Reporting...
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Page 609: ...Part XII Diagnostics...
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Page 639: ...Part XIII Appendix...
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Page 871: ...Version 6 6 871 Mediant 3000 User s Manual 55 Selected Technical Specifications Reader s Notes...