Planet Internet Telephony PBX System IPX-1900 User Manual page 29

Figure 3-25 IP PBX Trunk group - 1
2.2 Group number "002" means you want Group these 4 Gateway Trunks (GW_Trunk_A)
Figure 3-26 IP PBX Trunk group – 2
Group number "003" means you want Group these 4 FXO (PSTN) Trunk (PSTN_Trunk_C)
Figure 3-27 IP PBX Trunk group - 3
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