AudioCodes MSBG Series User Manual

User's Manual 590 Document #: LTRT-27045
Mediant 1000B Gateway & E-SBC
Table 27-7: Tone index Table Parameter Description
Parameter Description
Index Defines the table index entry. Up to 50 entries can be defined.
FXS Port First
fxs-port-first
[ToneIndex_FXSPort_First]
Defines the first port in the FXS port range.
FXS Port Last
fxs-port-last
[ToneIndex_FXSPort_Last]
Defines the last port in the FXS port range.
Source Prefix
src-prefix
[ToneIndex_SourcePrefix]
Defines the prefix of the calling number.
Destination Prefix
dst-prefix
[ToneIndex_DestinationPrefix]
Defines the prefix of the called number.
Priority Index
priority
[ToneIndex_PriorityIndex]
Defines the index of the distinctive ringing and call waiting tones.
The call waiting tone index is equal to the value of the 'Priority Index'
parameter plus the value of the FirstCallWaitingToneID parameter
(which defines the index of the first call waiting tone in the CPT file).
For example, if you want to use the call waiting tone in the CPT file
that is defined at Index #9, you need to configure the 'Priority Index'
parameter to "1" and the FirstCallWaitingToneID parameter to "8".
The summation of these values is 9 (1 + 8).
The default is 0.
To configure the CPT file, see ''Call Progress Tones File'' on page
739.
27.12 FXS/FXO Coefficient Types
The device can use the following FXS Coefficient and FXO Coefficient types:
 US line type of 600 ohm AC impedance and 40 V RMS ringing voltage for REN 3
 European standard (TBR21)
The Coefficient types increase return loss and trans-hybrid loss performance for two
telephony line type interfaces (US or European). The adaptation is performed by modifying
the telephony interface characteristics. This means, for example, that changing impedance
matching or hybrid balance doesn't require hardware modifications, so that a single device
is able to meet requirements for different markets. The digital design of the filters and gain
stages also ensures high reliability, no drifts (over temperature or time) and simple
variations between different line types.
The FXS Coefficient types provide best termination and transmission quality adaptation for
two FXS line type interfaces. The parameter affects the following AC and DC interface
parameters:
 DC (battery) feed characteristics
 AC impedance matching
 Transmit gain
 Receive gain

AudioCodes MSBG Series Specifications

General

Brand	AudioCodes
Model	MSBG Series
Category	Gateway
Language	English