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Blocking protection

80 dB

Intermodulation protection

Intercept

3° order IP3in

+15 dBm

Distortion

<2 %

@1KHz

Noise

53 dBp @25 KHz

47 dBp @12.5 KHz

Frequency stability 0.5 p.p.m. (without digital correction)

6.2 IP interfacing

6.2.1 LAN protocols

6.2.2 Ports and connectors

UTP LAN Port

Ethernet 10BT/100TX (auto MDI/MDI

X) on an RJ45 socket

Optical LAN Port (option)

Ethernet 100FX on SC

SC socket (not yet available)

Serial control Port

RS232 V.24 asynchronous 600 ÷ 115200 bps (optional)

USB control Port

(optional)

Protocols for voice packets

Proprietary between base stations

or Audio Gateway (RA

XXX):

UDP/IP (ipv4), unicast (from Slave or RA-TI-

XXX to master) and

selectable from multicast/unicast/broadcast (from master to Slave

or RA-TI-XXX), with DSCP set to “EF” (Telephony

service class),

according to RFC 4594

Between the Audio Gateway and SIP/Dispatching applications:

RTP (Real Time Protocol) according to RFC 3550

Protocols for BS “internal” network

control

UDP/IP (ipv4), unicast and multicast, with DSCP set to “

CS6

”

(Network Control service class), according to RFC 4594

Protocols for remote control, setup and

surveillance

UDP/IP and TCP/IP (ipv4) unicast and broadcast with DSCP set to

“AF13” (High-Throughput Data service class), according to RFC 4594

PTP Precision Time Protocol over IP

It delivers the highest level of precision clock synchronization for

real time industrial connectivity based on the IEEE 1588 standard

Audio format between Master and

Salves or RA-TI-XX

Analog: 64 kb/s

–

8 bit x 8 KHz selectable linear or mu

law code

DMR: AMBE II+

(Advanced Multi-Band Excitation)

Audio frame block net payload

Analog: 30 ms

–

240 bytes/samples

DMR selectable single/double timeslot: 60 ms –

27 bytes each

timeslot

Audio format between RA

XX and

PC/SIP application

RTP 64 kb/s – 8 bit x 8 KHz selectable A or mu-law coded

Messaging format between RA

and PC/SIP application

variable length RTP for text messaging according to RFC 4103