The Configuration Tree Functions

Service Configuration - Page 49

The Bandwidth Tab

The IPNC provides both Multi-link and Bandwidth Allocation Control Protocol (BACP). Multi-link enables connection of multiple B-channels between routers. When configuring top-up bandwidth or ISDN fallback, Multi-link must be enabled by the PPP tab (see page 52).

Minimum No. Of Channels: The number of channels used to connect to the service. The default is one channel (a blank field). Additional channels may be used, up to the maximum specified (see below) if either or both of Multilink or BACP is enabled on the PPP form.

Maximum No. Of Channels: The top limit to the number of channels to be made available to the service. This must be set to 2 or more and must obviously be greater than the minimum value. If the field is left blank, the system assumes that the maximum and minimum values are the same, i.e., a fixed number of channels applies.

Extra BW Threshold: This is defined as a percentage channel utilisation. If one channel is connected, and its usage threshold is reached, another channel is added. If utilisation across the aggregate of the two channels is then reached, another is added, and so on, up to the maximum.

Reduce BW Threshold: This is the utilisation percentage at which channels are dropped. The utilisation is calculated across all channels currently active, as for extra bandwidth. The last channel is only dropped if usage is zero for the idle period.

Callback Telephone Number: For BACP, this is the number the remote end dials to gain extra bandwidth.

Idle Period (secs): The time in seconds after which a call is closed if no traffic has been sent / received.

Active Idle Period (secs): The time-out in seconds that applies if there is no traffic but a session is still in progress. After the idle period time-out, the system starts this timer.

Min. Call Time (secs): Once a call has been set up, it is held for this period, even if there is no traffic, i.e., time-outs are not effective. It is sensible to set this value to the maximum time allowed by your supplier’s minimum call charge and set the idle periods to low values.

Extra BW Mode: This section allows additional channel bandwidth to be made available to either outgoing calls or incoming calls only. This can also be used to specify that outgoing calls are given priority over incoming calls, and vice versa.

INDeX IPNC Cassette Administration Manual

The Configuration Tree Functions - Page 49

38DHB0002UKDD – Issue 7 (22/11/02)

Service Configuration

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Avaya 38DHB0002UKDD manual Bandwidth Tab
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38DHB0002UKDD specifications

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