User's Manual
Avaya Branch Gateway Manager 10.0 Page 160
15-601011 Issue 29r (Friday, November 02, 2012)B5800 Branch Gateway
· Ring Delay: Default = 5 seconds. Range = 0 to 98 seconds.
This setting is used when any of the user's programmed appearance buttons is set to Delayed ringing. Calls received
on that button will initially only alert visually. Audible alerting will only occur after the ring delay has expired. This
setting can be overridden by a ring delay set for an individual user (User | Telephony | Multi-line Options | Ring Delay
).
· Call Priority Promotion Time (secs): Default = Disabled. Range = Disabled, 10 to 999 seconds.
When calls are queued for a hunt group, higher priority calls are placed ahead of lower priority calls, with calls of the
same priority sort by time in queue. External calls are assigned a priority (1-Low, 2-Medium or 3-High) by the
Incoming Call Route that routed the call. Internal calls are assigned a priority of 1-Low. This option can be used to
increase the priority of a call each time it has remained queued for longer than this value. The calls priority is increased
by 1 each time until it reaches 3-High.
· In situations where calls are queued, high priority calls are placed before calls of a lower priority. This has a
number of effects:
· Mixing calls of different priority is not recommended for destinations where Standalone Voice Mail is being
used to provided queue ETA and queue position messages to callers since those values will no longer be
accurate when a higher priority call is placed into the queue. Note also that Standalone Voice Mail will not
allow a value already announced to an existing caller to increase.
· If the addition of a higher priority call causes the queue length to exceed the hunt group's Queue Length
Limit , the limit is temporarily raised by 1. This means that calls already queued are not rerouted by the
addition of a higher priority call into the queue.
· Companding LAW
These settings should not normally be changed from their defaults.
· A-Law or U-Law
PCM (Pulse Code Modulation) is a method for encoding voice as data. In telephony, two methods of PCM encoding
are widely used, A-Law and U-Law (also called Mu-Law or µ-Law). Typically U-Law is used in North America and a
few other locations while A-Law is used elsewhere. As well as setting the correct PCM encoding for the region, the
A-Law or U-Law setting of a system when it is first started affects a wide range of regional defaults relating to line
settings and other values.
· Default Currency: Default = Locale specific .
Not used on Avaya Branch Gateway systems.
· Maximum SIP Sessions: Default = 0. Range = 0 – 128. Release 6.1+
The Maximum SIP Sessions setting determines the number of concurrent sessions allowed across all SIP trunks (SM
line and public SIP trunks). Setting Maximum SIP Sessions to a specific value requires a corresponding quantity of
Avaya Branch Gateway SIP Trunk Session licenses. If Avaya Branch Gateway cannot obtain the required license
quantity then the configuration change will be rejected. If the required license quantity cannot be obtained or renewed
for an already-configured value of Maximum SIP Sessions, then the Avaya Branch Gateway will be in License Error
mode, or in License Restricted mode if the 30-day grace period has expired. The license error can be resolved either
by making a sufficient quantity of SIP Trunk Session licenses available, or by reducing the configured Maximum SIP
Sessions setting to a value for which sufficient license quantity is available. Regardless of the license mode, the
number of concurrent SIP sessions allowed in system operation is determined by the Maximum SIP Sessions setting.
· Default Name Priority: Default = Favour Trunk. Release 6.2+
For SIP trunks, the caller name displayed on an extension can either be that supplied by the trunk or one obtained by
checking for a number match in the extension user’s personal directory and the system directory. This setting
determines which method is used by default. For each SIP line, this setting can be overridden by the line’s own Name
Priority setting if required (under Line | SIP line | SIP Line tab). The options are Favour Trunk or Favour
Directory.
· Favour Trunk – Display the name provided by the trunk. For example, the trunk may be configured to provide
the calling number or the name of the caller. The system should display the caller information as it is provided by
the trunk.
· Favour Directory – Search for a number match in the extension user’s personal directory and then in the system
directory. The first match is used and overrides the name provided by the SIP line. If no match is found, the name
provided by the line is used.
· Media Security (SIP): Default = Disable. Release 6.x+
This setting defines the Media Security for all SIP extensions and lines whose Media Security field is set to the value
System Default. When a new SIP extension or SM line is added, the default setting in its Media Security field is
System Default, for which the operation is determined by the setting that is defined here. For SIP lines however, which
typically connect to a public SIP trunk, the default setting in the Media Security field is Disable, for which the operation
is not impacted by the setting that is defined here. The Media Security (SIP) options are:
· 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.
· Prefer – Media security is preferred. Attempt to use secure media first, and if unsuccessful fall back to non-secure
media.
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