User Guide| LQ Series 4.0
18 Upgrading your device 148
18.1 Import the upgrade file 148
19 FAQs 150
19.1 Device queries 150
19.2 2-wire and 4-wire specific queries 151
19.3 Interconnection queries 152
19.4 IP and network queries 159
19.5 Audio quality queries 165
19.6 Telephony queries 169
20 Technical specifications 172
20.1 System limits and capacities 172
20.2 Audio 173
20.3 Pinouts 173
20.4 4-wire pinouts 174
20.5 Partyline output current (2-wire) 175
20.6 Network quality settings 176
20.7 Connectors 176
20.8 Power supply 177
20.9 Environmental 177
20.10 Dimensions and weight 177
21 Terminology/glossary 178
22 Compliance 180
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