User's Manual

Avaya Branch Gateway Manager 10.0 Page 262
15-601011 Issue 29r (Friday, November 02, 2012)B5800 Branch Gateway
5.6.3 VoIP
This tab is only available for H.323 and SIP extensions. The settings available will vary depending on the extension type:
· H.323 IP Extension
· SIP Extension
5.6.3.1 H323 Extension
These settings are shown for a H.323 IP extension.
Usability
· Mergeable: These settings are not mergeable. Changes to these settings will require a reboot of the system.
Configuration Settings
· IP Address: Default = 0.0.0.0
The IP address of the phone. The default setting accepts connection from any address. For phones using DHCP, the
field is not updated to show the IP address being used by the phone.
· For T3 IP phones installed using DHCP, the address obtained and being used by the phone is displayed. If that
address is from the same range as the DHCP pool being supported by the Avaya Branch Gateway system, Branch
Gateway Manager will indicate an error.
· The IP Address field can be used to restrict the the source IP address that can used by a Remote H.323
Extension. However, it should not used in the case where there is more than one remote extension behind the
domestic router.
· MAC Address: Default = 0000000000000 (Grayed out)
This field is grayed out and not used.
· Codec Selection: Default = System Default
This field defines the codec or codecs offered during call setup.
· The available codecs in default preference order are: G.711 A-Law, G.711 U-Law, G.729 and G.723.1.
Note that the default order for G.711 codecs will vary to match the system's default companding setting.
G.723.1 is not supported on Linux based systems. The G.722 64K codec is also supported on systems with
IP500 VCM, IP500 VCM V2 or IP500 Combo cards but it not used by default.
The codecs available to be used are set through the System Codec list (System | System Codec ). The
drop-down selector options are:
· System Default
This is the default setting. When selected, the codec list below show matches the codecs set in the system
wide Default Selection list (System | Codecs ).
· Custom
This option allows specific configuration of the codec preferences to be different from the system Default
Selection list. When Custom is selected, the list can be used to select which codecs are in the Unused list
and in the Selected list and to change the order of the selected codecs.
· TDM | IP Gain: Default = Default (0dB). Range = -31dB to +31dB.
Allows adjustment of the gain on audio from the system TDM interface to the IP connection.
· IP | TDM Gain: Default = Default (0dB). Range = -31dB to +31dB.
Allows adjustment of the gain on audio from the IP connection to the system TDM interface.
· Supplementary Services: Default = H450.
Selects the supplementary service signaling method for use with non-Avaya IP devices. Options are None, QSIG and
H450. For H450, hold and transfer are supported. Note that the selected method must be supported by the remote
end.
· Media Security: Default = Disable. Release 6.x+.
Secure RTP (SRTP) can be used between IP devices to add additional security. These setting control whether SRTP is
used for this device and the setting used for the SRTP. For further details of SRTP refer to Secure VoIP (SRTP) .
Note that changing the media security setting of a device may cause it to re-register and may end any call currently in
progress on that device.
· Disable – Media security is not required. All media sessions (audio, video, and data) will be enforced to use
RTP only.
· Enforce – Media security is required. All media sessions (audio, video, and data) will be enforced to use SRTP
only.
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