Avaya VoIP Monitoring Manager Reference
85
Codec: A Codec is an encoder/decoder. In the context of RTP, it is the type of encoding used for
the payload of the RTP packets exchanged as part of a conversation. For example, some
RTP Codecs are G.723, G.711 aLaw and G.729. Session Properties shows which Codec
is in use. RTP does not distinguish between different sub-types of codec (such as g729A
and g729B).
D
Differentiated Services Code Point: The DiffServ Code Point (DSCP) metric represents the
value of the IP DSCP field of the incoming RTP packets. The DSCP metric is a number in
the range 0-63 and is used to specify the level of service a packet should receive whilst
traversing the network.
DSCP: Refer to Differentiated Services Code Point.
E
Echo Tail Length: The echo tail length metric represents the length of echo cancellation
processing determined by the distance between the gateway and the endpoint. The echo
tail length metric is represented in milliseconds and can have typical value ranging from
8ms to 32ms.
Endpoint Type: The Results List displays an image representing the endpoint type in the left-
hand column as follows: IP Phone - Standalone desk phone with a dedicated Ethernet
dual hub, its own screen, handset, dial pad and feature access buttons; Soft Phone -
Software only phone which is installed on any PC running the Windows operating
system; Media Gateway - a network VoIP device.
EndTime: The EndTime column in the exported file displays the date and time the session
ended. This column appears in the Session Table of the exported file.
F
Framesize: Frame size is the logical units into which data is partitioned for processing. In the
case of a voice coder/decoder (codec) this is the time sliced blocks used by the codec
algorithm. For example, the G.729 codec breaks the input audio signal into 10ms blocks
for encoding purposes. Therefore, if the RTP packet payload is in 30ms blocks then there
are 3 frames per packet. VoIP Monitoring Manager displays the framesize in the Session
Properties tab of the report dialog.
G
Gatekeeper: The Gatekeeper column in the Session Table displays the media server or CLAN
that controls the endpoint.
Gateway: A Gateway is generally used as a bridge between signaling protocols and bearer
media. In this context, the Gateways allow IP endpoints to communicate with non-IP
endpoints (e.g. the traditional circuit switched world of analogue and digital phones).
AVAYA Gateways also perform the task of mixing the media channels in a conference
call. A pair of Gateways can also be set up as an IP trunk.
(60 Seiten)
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Kommentare zu diesen Handbüchern