Call Progress tones for INDIA PSTN FXO gateways
Telephony Call Progress tones for india and other countries...
In telephony, call progress tones are audible tones that provide an indication of the status of a telephone call to the user. The tones are generated by a central office or a private branch exchange (PBX) to the calling party.
Equipment such as fax machines and modems are designed to recognize dial tones and busy tones.
where we need Call Progress Tones:
In asterisk or any other telephony pbx which are integrtaed with the thirdparty PSTN/FXO/VOIP gateways to process the PSTN calls and determine the callerid, hangup, busy, ringback, dialtone you need to set the call progress tones according to the respective country .
Grandstream Call Progress tone for INDIA
AC termination Impedence for india
Call progress tone for other countries
For other countries call progress tones checkout the below link