ABUS FUAA10021 Secvest IP Basic Set Operating instructions - Manual (Page 41)

14 Configuration of the web server
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1. Option: SIP to SIP telephony (free of charge)
Format: SIP number @ provider.URL
Example: 7897184 @ localphone.com
SIP to SIP telephony is free of charge. The provider of the “called”
subscriber needs to be entered here as the provider (=recipient –
provider).
In this case, the centre calls an SIP subscriber. For instance, this
could be an IP phone, a Smartphone with SIP application or a PC
with an in-built SIP telephone. This is purely network-based
communication from the centre to end device. It takes approx. 20-30
seconds to make a connection from SIP to SIP.