Audio Level
Output audio level of GSM codec [dB] – audio volume gain/loss to GSM.
Input audio level of GSM codec [dB] – audio volume gain/loss from GSM.
Tones Generated for Incoming Calls from GSM/UMTS
Dial tone – set the dial tone for incoming calls from GSM/UMTS.
Ring tone – set the ring tone for incoming calls from GSM/UMTS.
Generate busy tone to GSM/UMTS – enable busy tone generation for call
termination.
Error GSM/UMTS Causes
Set the ISDN release cause for each of the below mentioned statuses. Every call that
meets any of the below mentioned requirements, will be rejected with a user defined
cause (the ISDN cause number will be translated to VoIP as a SIP code as defined
below).
Lack of digits in OVERLAP mode – any call that fails to meet the minimum
digits count requirement will be rejected.
Restricted number prefix – any call whose prefix is not included in any of the
prefix lists will be rejected.
Selected module / GSM group is not ready – a call will be rejected in case
there is no available GSM module in the selected (by LCR) outgoing GSM group.
Selected module / GSM groups are not ready – a call will be rejected in case
there is no available GSM module in the selected (by LCR) outgoing GSM groups.
Warning
The GSM/UMTS codec and noise reduction settings of the above listed
module types may affect the DTMF detection quality. Make sure that the
settings comply with the mobile network used.
Caution
If the Generate busy tone function is enabled, the duration of outgoing
calls billed by the GSM/UMTS provider will be extended!
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