User's Manual
388
Document #: LTRT-89729
Mediant 3000
that the call is routed to an appropriate PSAP, based on ELIN-address match lookup in the
Emergency Services provider's ALI database.
The figure below illustrates an AudioCodes ELIN Gateway deployed in the Lync Server
2010 environment for handling E9-1-1 calls between the Enterprise and the PSTN.
Figure
26-5: AudioCodes ELIN Gateway for E9-1-1 in Lync Server 2010 Environment
26.5.2.3.1 Detecting and Handling E9-1-1 Calls
The ELIN Gateway identifies E9-1-1 calls and translates their incoming E9-1-1 calling
numbers into ELIN numbers, sent toward the PSAP. The ELIN Gateway handles the
received E9-1-1 calls as follows:
1.
The ELIN Gateway identifies E9-1-1 calls if the incoming SIP INVITE message
contains a PIDF-LO XML message body. This is indicated in the SIP
Content-Type
header, as shown below:
Content-Type: application/pidf+xml
2.
The ELIN Gateway extracts the ELIN number(s) from the "NAM" field in the XML
message. The "NAM" field corresponds to the <CompanyName> column in the
Location Information Server (LIS). The ELIN Gateway supports up to five ELIN
numbers per XML message. The ELINs are separated by a semicolon. The digits of
the ELIN number can be separated by hyphens (xxx-xxx-xxx) or they can be adjacent
(xxxxxxxxx), as shown below:
<ca:NAM>1111-222-333; 1234567890 </ca:NAM>
3.
The ELIN Gateway saves the
From
header value of the SIP INVITE message in its
ELIN database table (
Call From
column). The ELIN table is used for PSAP callback,
as discussed later in 'PSAP Callback to Lync 2010 Clients for Dropped E9-1-1 Calls'
on page
. The ELIN table also stores the following information:
•
ELIN:
ELIN number
•
Time:
Time at which the original E9-1-1 call was terminated with the PSAP
•
Count:
Number of E9-1-1 calls currently using this ELIN
Содержание Mediant 3000
Страница 1: ...User s Manual Version 6 6 Enterprise Session Border Controller VoIP Digital Media Gateway Mediant 3000...
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Страница 21: ...Version 6 6 21 Mediant 3000 User s Manual 1 Overview Figure 1 2 Mediant 3000 TP 6310 Functional Block Diagram...
Страница 22: ...User s Manual 22 Document LTRT 89729 Mediant 3000 Figure 1 3 Mediant 3000 TP 8410 Functional Block Diagram...
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Страница 27: ...Part I Getting Started with Initial Connectivity...
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Страница 41: ...Part II Management Tools...
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Страница 871: ...Version 6 6 871 Mediant 3000 User s Manual 55 Selected Technical Specifications Reader s Notes...
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