AudioCodes E-SBC User Manual

CHAPTER29 Analog Gateway
Mediant 1000 Gateway & E-SBC | User's Manual
Parameter Description
[ToneIndex_
PriorityIndex]
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.
Analog Coefficient Types
The device can use the following analog Coefficient types:
■ FXS:
● USA line type: 600 ohm AC impedance and 40 V RMS ringing voltage for ringer
equivalence number (REN) of 3
● European standard (TBR21)
■ FXO:
● REN: 0.5
● USA line type: 600 ohm AC impedance
● 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
■ Hybrid balance
■ Frequency response in transmit and receive direction
■ Hook thresholds
■ Ringing generation and detection parameters
➢ To select the Coefficient types:
1. Open the Analog Settings page (Setup menu > Signaling & Media tab > Gateway folder >
Analog Gateway > Analog Settings).
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AudioCodes E-SBC Specifications

General

Brand	AudioCodes
Model	E-SBC
Category	Gateway
Language	English