197 TREF - T-Reference point matrix


Restrictions	Functions of the AMO	Error Messages and Advisories
Interrelationships	Parameter Description

’T-Reference point’ indicates a defined interface between a PABX and the public ISDN-Network, where a specified attenuation level has to be reached. For stable voice quality not depending on connection type and network size, these T-Reference point conditions are not only for digital interfaces but for analog interfaces, too. The attenuation values used for reaching the levels are stored, country specific, on HD in the TREF-TAB file. They will be loaded into the Database by means of AMO TREF. The values stored in Database can be changed by means of AMO TREF.

’T-Reference point’ can only be used for compact PABX, where only LTUCE/SCC are assigned and no LTUC.

There is TRTON-TAB file on HD which has country specific db attenuation values corresponding to the matrix of devices versus tone groups . This table is also loaded by means of AMO TREF.

For all countries except USA (CC=K) all tones (see SIU in ZAND and UCSU) are assigned to TONGRP1.

In USA (CC=K) the following assignment is valid:


1	Internal dial tone	DB_GSGP_SIU_FKT_TON_00	TONGRP1
2	External dial tone	DB_GSGP_SIU_FKT_TON_01	TONGRP1
3	Special dial tone	DB_GSGP_SIU_FKT_TON_08	TONGRP1
15	Testtone	DB_GSGP_SIU_FKT_TON_15	TONGRP1
4	Ringback tone	DB_GSGP_SIU_FKT_TON_02	TONGRP2
5	Busy tone	DB_GSGP_SIU_FKT_TON_03	TONGRP2
7	Camp-on tone	DB_GSGP_SIU_FKT_TON_05	TONGRP2
8	Number Unobtainable tone	DB_GSGP_SIU_FKT_TON_09	TONGRP2
9	Data ring tone	DB_GSGP_SIU_FKT_TON_06	TONGRP2
11	Congestion tone	DB_GSGP_SIU_FKT_TON_11	TONGRP2
12	Conference tone	DB_GSGP_SIU_FKT_TON_12	TONGRP2
13	2nd CO dial tone	DB_GSGP_SIU_FKT_TON_13	TONGRP2
14	Negative Acknowledge tone	DB_GSGP_SIU_FKT_TON_14	TONGRP2
6	Override tone	DB_GSGP_SIU_FKT_TON_04	TONGRP3
10	Positive Acknowledge tone	DB_GSGP_SIU_FKT_TON_10	TONGRP3
23	Conference auxiliary tone 2	DB_GSGP_SIU_FKT_TON_16	TONGRP3
24	Conference auxiliary tone	DB_GSGP_SIU_FKT_TON_17	TONGRP3
26	LCR-Expensive tone	DB_GSGP_SIU_FKT_TON_18	TONGRP3
	Test Tone	DB_GSGP_SIU_FKT_TESTS	TONGRP4
0	Idle channel	DB_GSGP_SIU_FKT_TON_07	TONGRP5
16	Text: Please hold the line	DB_GSGP_SIU_FKT_TEXT_01	TONGRP6
17	Text: Number not available	DB_GSGP_SIU_FKT_TEXT_11	TONGRP6
18	Text: Function not possible	DB_GSGP_SIU_FKT_TEXT_02	TONGRP6
19	Text: Access not authorized	DB_GSGP_SIU_FKT_TEXT_03	TONGRP6
20	Text: Currently in use	DB_GSGP_SIU_FKT_TEXT_03	TONGRP6
21	Text: You have a message	DB_GSGP_SIU_FKT_TEXT_13	TONGRP6
22	Music on hold	DB_GSGP_SIU_FKT_MUSIK	TONGRP7

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