How to call outside the SIP provider, e.g. gigaset.net?

There is a home voip Siemens Gigaset A580 IP. Set up two SIP provider gigaset.net and bestvoipreselling (one of the crowd DELLMONT SARL). Connection to the wired telephone line no. I would like to call from outside, i.e. mobile phone, home tube attached to the above-mentioned database. Is there any possibility to call on the available sip accounts without paying an outside phone number?
October 3rd 19 at 01:30
1 answer
October 3rd 19 at 01:32
Well, it all comes down to install a sip client on a mobile phone...
Thanks, but the conversation is not about the smartphone. This solution is trivial and not interesting. - Ethan.Langworth commented on October 3rd 19 at 01:35

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