Setting up the terminal©2001 Nokia Mobile Phones. All rights reserved. 23a value between 1(the lowest volume level) and 10 (the highest volumelevel).The terminal is now ready for connecting to the PBX.Installing the antenna adapterAn external antenna improves signal reception and transmission. An antennaadapter for use between the Nokia 22 and a standard FME connector is providedby Nokia (See “6. Accessories” on page 34).Distance, large obstacles (for example hills, buildings) or installing the devicebelow ground level can reduce the signal strength. Installing an external anten-na may help.The installation procedure:1 Pull out the antenna from the GSMterminal.2 Connect the antenna adapter to theantenna connector.3 Install the antenna adapter in the ex-ternal FME antenna connector.For specifications for the external antenna, antenna adapter and connectors, see“7. Technical specifications” on page 36.