Welltech ePBX80 V.1.1 - Manual (Page 128)

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3. Outgoing via remote FXO Gateway
In this case, we use Wellgate2540 (4 port FXO) and Wellgate2680 (8 port FXO)
for example.
Step 1: Creating a new SIP trunk or using default sip trunk on Epbx80
(Epbx80 prepare 2 SIP trunk numbers of 888 and 889 by default) (see
figure 6)
Figure 6
Step 2: using Wellgate2540 sip trunk (figure 7) to register number 888 and
Wellgate2680 sip trunk (figure 8) to register number 889.
Figure 7