MultiVOIP Quick Start Guide
54
the Auto Call group. Then enter the phone number of the
remote MultiVOIP 400/800 in the Phone Number box.
14. The Automatic Disconnection group provides three
options to be used singly or in combination.
The Jitter Value defines the average inter-arrival packet
deviation (in milliseconds) before the call is automatically
disconnected. Jitter is the inter-arrival packet deviation
(phase shift of digital pulses) over the transmission
medium that causes voice breakup which can be
particularly disruptive to voice communications. The
default setting is 20 milliseconds. A higher value means
that the voice transmission will be more accepting of jitter.
A lower value will be less tolerant of jitter.
Consecutive Packets Lost defines the number of
consecutive packets that are lost after which the call is
automatically disconnected. The default setting is 30
packets.
Call Duration defines the maximum length of time (in
seconds) that a call remains connected before the call is
automatically disconnected. The default setting is 180
seconds. A call limit of three minutes may be too short for
most configurations. Therefore, you may want to increase
this default value.
15. You can set billing options for inbound and outbound calls
by selecting them in the Billing Options group and then
entering the charge in cents per number of seconds.
16. A minimum and maximum set of values can be set for
Dynamic Jitter Buffer. When receiving voice packets
from a remote MultiVOIP 400/800, it is possible to
experience varying delays between packets due to traffic
conditions on the network. This is called Jitter. To
compensate for this effect, the MultiVOIP 400/800 uses a
Dynamic Jitter Buf fer. The Jitter Buf fer allows the
MultiVOIP 400/800 to wait for delayed voice packets by
automatically adjusting the length of the Jitter Buffer