Another aide-memoir, these are the setting required to enable a sipgate account (and PSTN number) to connect to a phone registered to your Elastix / Asterisk PBX:
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Attacks on Asterisk-based telephony systems are not uncommon. This video explains how to mitigate some attack vectors:
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Another aide-memoir reproduced from voip-info.org: Asterisk provides Voicemail services with Directory, Call Conferencing, Interactive Voice Response, Call Queuing. It has support for three-way calling, caller ID services, ADSI, IAX, SIP, H.323 (as both client and gateway), MGCP (call manager only) and SCCP/Skinny. SEE ALSO: The Asterisk Book
