User's Manual
18
Document #: LTRT-65417
MP-11x & MP-124
1.1
MediaPack Models
The analog MediaPack 1xx models and their corresponding supported configurations are
listed in the table below:
Table
1-1: MediaPack 1xx Models and Configurations
MediaPack Model
FXS
FXO
Combined FXS /
FXO
Number of
Channels
MP-124
Yes
No
No
24
MP-118
Yes
Yes
4 + 4
8
MP-114
Yes
Yes
2 + 2
4
MP-112*
Yes
No
No
2
* The MP-112 differs from the MP-114 and MP-118 in that its configuration excludes the
RS-232 connector, Lifeline option, and outdoor protection.
1.2
SIP Overview
Session Initiation Protocol (SIP) is an application-layer control (signaling) protocol used on
the gateway for creating, modifying, and terminating sessions with one or more
participants. These sessions can include Internet telephone calls, media announcements,
and conferences.
SIP invitations are used to create sessions and carry session descriptions that enable
participants to agree on a set of compatible media types. SIP uses elements called Proxy
servers to help route requests to the user's current location, authenticate and authorize
users for services, implement provider call-routing policies and provide features to users.
SIP also provides a registration function that enables users to upload their current locations
for use by Proxy servers. SIP implemented in the gateway, complies with the Internet
Engineering Task Force (IETF) RFC 3261 (refer to http://www.ietf.org).
The SIP call flow, shown in the figure below, describes SIP messages exchanged between
two devices during a basic call. In this call flow example, device 10.8.201.158 with phone
number 6000, dials device 10.8.201.161 with phone number 2000.
Figure
1-2: SIP Call Flow
Summary of Contents for MediaPack MP-112
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Page 31: ...Part II Management Tools ...
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Page 91: ...Part III General System Settings ...
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Page 103: ...Part IV General VoIP Configuration ...
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Page 199: ...Part V Gateway Application ...
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Page 287: ...Part VI Stand Alone Survivability Application ...
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Page 319: ...Part VII Maintenance ...
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Page 347: ...Part VIII Status Performance Monitoring and Reporting ...
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Page 377: ...Part IX Diagnostics ...
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Page 403: ...Part X Appendix ...
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