Integration Manual

GTM353W Integration Manual
Author:
R
. Claessens
Version:
4.0 Draft 2
Creation Date:
September 20, 2006
Page:
30 of 52
Option Confidential:
This document is Option Confidential - it may not be duplicated, neither distributed externally without prior and written permission of
Option NV.
3.4.2.1.2 Voice codecs
The module supports 1. Full Rate (FR), 2. Enhanced Full Rate (EFR), 3. Half
R
ate (HR) and 4. Adaptive Multi-Rate (AMR) voice codecs.
3.4.2.1.3 Handling of Emergency Calls
It is possible to place an emergency call (i.e. 112 or 911) without having to
enter a PIN-code. SO the call should be set-up by the AT-command interface
either PCM interface.
3.4.2.1.4 Voice quality
The module will fulfil terminal acoustics according to 3GPP TS 26.131 Rel 5
and TS 26.132 Rel 5 (headset) if relevant.
Comment: The overall requirement for the module, is that it shall be possible
to achieve typical MOS 3.5 between a phone connected to the unit and a phone
connected to the PSTN (running AMR codec).
Algorithm Bit Rate
(kbits/s)
MOS
(good network
conditions)
Framesize
(ms)
PCM G.711 64 4.3 0
GSM FR RPE-
LTP
13 3.7 (average) 20
GSM EFR 13 4 20
GSM HR VSELP 6.3 ~3.4 20
GSM AMR CELP adaptive 20
3.4.2.1.5 Message based DTMF transmission on the radio interface
The module is capable of transmitting DTMF on the radio interface as
received on the POTS interface using message based signalling on Layer 3 out
of ‘Voice’ band.
The module detects and suppresses DTMF tones generated on the POTS
interface according to applicable standards (when the voice service is being
used). (See AT commands doc subsection ‘Voice’)
3.4.2.1.6 Tones
The following tones are provided by the module over the POTS interface.
9 Call waiting tone:
A call waiting tone that is used to advise a subscriber who is engaged in