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VoIP - Calling With a SIP URI

360 bytes added, 16:41, 8 May 2019
Some softphones need a SIP account defined in order to call SIP URIs (even though the call is made directly, not through that account)
* Twinkle (Linux) - although currently (Dec 2018) there's a problem with SRV records when using systemd-resolved (on Ubuntu and Debian at least)
* Voipfone Softphone (Android) deserves a mention. It needs an account with, but you can signup and try for free. Their softphone app just works out of the box for calling SIP URIs (although an update in March 2019 has stopped this working)
Some clients can call SIP URIs without any configuration, other clients require that a SIP account is defined (and perhaps enabled). For these clients, it can be useful to have a free SIP account which can't place external calls (e.g. [ linphone] - that way one can be sure that the client isn't making chargeable calls.
==Known not-working clients==