AUDIOLINE POWER PMR 40 Manual de usuario descargar pdf (Pagina 9)

A.W. Communication Systems Limited

TRip2 Manual, Version 1.5 Page 9 of 34 © AWCSL 2010

turned off when all alarms are cleared. If the SMTP parameters of the unit are correctly configured,

an email will be sent when a remote alarm has been triggered, and another when it has cleared.

 An RTP alarm is triggered if there is a period of time in excess of the RTP local delay or RTP

remote delay values (see Table 16) when no RTP packets are received.

 An RTCP alarm is triggered if there is a period of time in excess of the RTCP local delay or

RTCP remote delay values (see Table 16) when either (i) the average values of RTCP jitter,

loss or delay values exceed the values in the RTCP jitter, RTCP loss or RTCP delay variables

respectively, or (ii) no RTCP packets are received.

The TRip2 supports a single duplex RTP stream using UDP over IP. The IP address and UDP port

number that the TRip2 sends/receives data to/from can be configured to be different when the unit

is in main and backup mode (names in italics refer to variables set through the command-line

interface – see section 5.6.10):

Unit Remote Setting

IP Address Used

UDP Port Used

Main

Unit Main Address

RTP Main Port

Backup

Unit Backup Address

RTP Backup Port

Table 2: RTP Transport Address Parameters

The RTP port number may be any even UDP port number above 5000, and the RTCP port number is

always one above the RTP port number.

By default the port numbers used for both main and backup RTP and RTCP UDP streams are 5004

and 5005 respectively.

The TRip2 unit will only accept RTP and RTCP packets from the same transport address (IP address

and port number) as it is transmitting to. In this way, unauthorised access to transmitter resources is

prevented.

The provision of a guaranteed quality of service for the audio data path is a feature of the IP network

across which the data stream travels. In order to support QoS features within the network, the TRip2

supports setting the Type of Service (ToS) in the IP packets used for the RTP audio stream.

Physical & Electrical

The analogue audio interface is provided on an RJ45 socket that shares functionality with the remote

RS-232 port and Push To Talk (PTT) control pin. The pin connections are as shown in Table 3. The

Line In and Line Out directions are as viewed by the TRip2 unit.

Pin Number

Purpose

RS-232 RXD

RS-232 TXD

Audio Line Out

Audio Line In

Audio Line Out

PTT I/O

Ground

Table 3: RJ45 Connections

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 33 34

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