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AA55..1166::

TETRA mobiles can only make and receive group calls to

or from groups that they have successfully attached to the net-

work. Normally a TETRA mobile will attach one or more groups at

registration, and you will be able to subsequently change the cur-

rently selected group. Ensure that the 2968 is not displaying

"GSSI: NO GROUPS ATTACHED". If it is, this could be because the

mobile group selection is explicitly set to 'NO GROUP', or because

the mobile has not been configured with any group identities. Use

the [show detail] [groups] keys to see details of the groups

attached by the mobile. Use the mobile's group selector knob or

buttons or menu functions to select a group. Depending on the

mobile, you may need to explicitly set group mode in order to

make group calls.

Section 6 Q&A: Compatibility with TETRA mobiles and

networks

QQ66..11::

Which TETRA mobiles can be tested by the IFR 2968?

AA66..11::

The following mobiles have been tested and demonstrated

to work with the IFR 2968:

Cleartone CM9000/CM9000P vehicle mount

Marconi Elettra VT vehicle mount

Marconi PUMA-T hand portable

Marconi PUMA-T2 hand portable

Motorola MTM 300 vehicle mount

Motorola MTP 200/300 hand portable

Motorola MTH 300/300s small hand portable

Motorola MTH 500 small hand portable

Motorola MTM 700 vehicle mount

Motorola MTP 700 hand portable

Nokia TMR 400/400E/420 vehicle mount

Nokia THR 400/420E hand portable

Nokia THR 600/600E hand portable

Nokia THR 850 small hand portable

Simoco/Sepura SRM 1000 vehicle mount

Simoco/Sepura SRP 1000 hand portable

Simoco/Sepura SRP 2000 small hand portable

Teltronic MDT-400 vehicle mount

Thales Vector covert radio

Note: the above is not necessarily a complete list, and does not

necessarily confirm full compatibility with every function on every

mobile; however, all of the above mobiles can at least perform

registration and call set-up with the IFR 2968 so that parametric

measurements can be made. Where available, mobiles have been

tested in different versions covering the 380-400 MHz public

safety band, the 410-430 MHz commercial band and the

800 MHz Asia Pacific band.

QQ66..22::

How do I make an RF connection between the IFR 2968

and the mobile?

AA66..22::

Vehicle mounted mobiles and larger hand portable mobiles

will typically have a standard RF connector such as BNC, TNC or

SMA, for which connectors and adaptors are readily available

from third party suppliers. Smaller hand portable mobiles may

require a proprietary antenna adaptor or RF test lead, which you

may only be able to obtain from the mobile manufacturer.

Normally you should connect to the IFR 2968 N-type socket ('150

W MAX') and ensure that both LEDs next to this socket are lit. For

further details refer to 'RF connection between the mobile and the

IFR 2968' in the application note 'Testing TETRA mobiles with the

IFR 2968'.

QQ66..33::

What is the significance of "TIP" and which version does

the IFR 2968 comply with?

AA66..33::

TIP (TETRA Interoperability Profile) is very significant for IFR

as well as for the TETRA mobile and infrastructure manufacturers.

It provides a common interpretation and implementation of the

TETRA Air Interface to ensure that mobiles from multiple manu-

facturers operate on infrastructure from multiple manufacturers.

For IFR, it is the means to ensure that mobiles from multiple man-

ufacturers operate on the IFR 2968. IFR actively participates in the

TETRA MoU TIP specification working group and IOP testing to

ensure compatibility between the IFR 2968 and TETRA mobiles

from all manufacturers. For more information on Interoperability

(IOP) refer to www.tetramou.com/ interoperability/index.asp.

The IFR 2968 complies with the following TIP specifications:

TTR 001-1 v3.0.13 June 2001: TIPv3 Core Services

TTR 001-2 v1.0.1 August 2001: TIPv3 Short Data

Service (SDS)

TTR 001-6 v1.0.0 June 2001: TIPv4 Air Interface

Migration

TTR 001-8 v1.0.0 October 2001: TIPv4 Testing

Requirements

TTR 002 v1.0.3 November 2000: Direct Mode TIP

QQ66..44::

I have a TETRA mobile that claims to be TIP compliant, and

the IFR 2968 claims to be able to test it, so why doesn't the

mobile register to the 2968 when I switch it on?

AA66..44::

TETRA mobiles normally only register to base stations

belonging to their home network for which they have been con-

figured (programmed). Therefore the IFR 2968 must be set up to

exactly match the essential parameters of the home network,

otherwise the mobile is likely to ignore the test set. The essential

parameters are as follows:

• Channel Plan: the frequency band and method of

numbering the frequency channels.

• Channel Plan Frequency Offset: typically 12.5 kHz offset

or 0 Hz offset

• Control Channel: particular control channel frequency if

the mobile does not scan the band.

• Country Code (MCC) and Network Code (MNC): these

identify the home network

For further details refer to the 2968 operating manual TETRA sup-

plement issue 10, chapter 3, pages 7 to 11, and chapter 4, pages

2 to 3. You may need to contact the mobile manufacturer or net-

work operator to obtain the essential parameter information.

Country Code (MCC) values are published in ETSI EN 300 392-2

v2.3.2 Annex K. Network Code (MNC) values are normally allo-

cated by the radio regulation authority in each country, and these

values may not necessarily be published.

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Aeroflex 2050T SERIES Especificaciones Pagina 16

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