User's Manual
512
Document #: LTRT-65417
MP-11x & MP-124
Parameter
Description
[1]
= Enable
EMS: Options User Part
[OPTIONSUserPart]
Defines the user part value of the Request-URI for outgoing SIP
OPTIONS requests. If no value is configured, the endpoint number is
used.
A special value is ‘empty’, indicating that no user part in the Request-
URI (host part only) is used.
The valid range is a 30-character string. The default value is an empty
string (‘’).
Web: Fax Signaling
Method
EMS: Fax Used
[IsFaxUsed]
Determines the SIP signaling method for establishing and transmitting a
fax session after a fax is detected.
[0]
No Fax
= (Default) No fax negotiation using SIP signaling. Fax
transport method is according to the parameter FaxTransportMode.
[1]
T.38 Relay
= Initiates T.38 fax relay.
[2]
G.711 Transport = Initiates fax/modem using the coder G.711 A-
law/Mu-law with adaptations (see Note below).
[3]
Fax Fallback
= Initiates T.38 fax relay. If the T.38 negotiation
fails, the device re-initiates a fax session using the coder G.711 A-
law/
µ
-law with adaptations (see the Note below).
Notes:
Fax adaptations (for options 2 and 3):
Echo Canceller = On
Silence Compression = Off
Echo Canceller Non-Linear Processor Mode = Off
Dynamic Jitter Buffer Minimum Delay = 40
Dynamic Jitter Buffer Optimization Factor = 13
If the device initiates a fax session using G.711 (option 2 and
possibly 3), a 'gpmd' attribute is added to the SDP in the following
format:
For A-law:
'a=gpmd:8 vbd=yes;ecan=on'
For
µ
-law:
'a=gpmd:0 vbd=yes;ecan=on'
When this parameter is set to 1, 2, or 3, the parameter
FaxTransportMode is ignored.
When this parameter is set to 0, T.38 might still be used without the
control protocol's involvement. To completely disable T.38, set
FaxTransportMode to a value other than 1.
This parameter can also be configured per IP Profile (using the
IPProfile parameter).
For more information on fax transport methods, see 'Fax/Modem
Transport Modes' on page
145
.
[HandleG711asVBD]
Enables the handling of G.711 as G.711 VBD coder.
[0]
= (Default) Disable. The device negotiates G.711 as a regular
audio coder and sends an answer only with G.729 coder. For
example, if the device is configured with G.729 and G.711 VBD
coders and it receives an INVITE with an SDP offer containing G.729
and “regular” G.711 coders, it sends an SDP answer containing only
the G.729 coder.
[1]
= Enable. The device assumes that the G.711 coder received in
the INVITE SDP offer is a VBD coder. For example, if the device is
configured with G.729 and G.711 VBD coders and it receives an
INVITE with an SDP offer containing G.729 and “regular” G.711
coders, it sends an SDP answer containing G.729 and G.711 VBD
coders, allowing a subsequent bypass (passthrough) session if
Summary of Contents for MediaPack MP-112
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Page 14: ...User s Manual 14 Document LTRT 65417 MP 11x MP 124 Reader s Notes ...
Page 21: ...Part I Getting Started with Initial Connectivity ...
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Page 30: ...User s Manual 30 Document LTRT 65417 MP 11x MP 124 Reader s Notes ...
Page 31: ...Part II Management Tools ...
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Page 86: ...User s Manual 86 Document LTRT 65417 MP 11x MP 124 Reader s Notes ...
Page 91: ...Part III General System Settings ...
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Page 103: ...Part IV General VoIP Configuration ...
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Page 172: ...User s Manual 172 Document LTRT 65417 MP 11x MP 124 Reader s Notes ...
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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