I am doing a voice implementation for one customer, ISP sending DID 5500 to 5599 to MGCP gateway, currently, we only assigned 5500-5550, the rest number from 5551 to 5599 have been reserved for future use.
the customer want to play a announcement for outside people (maybe inside people as well) dialling 5551-5599, let's say the announcement will be "thanks for calling ABC Company, sorry, please check the number and dial again"
I am reading Call Manager doc, looks annunciator can do it, however not sure how to do it, please help
SIP traces provide key information in troubleshooting SIP Trunks, SIP
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Please find the attached HTML document, download and open it on your PC.
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