<Extension Settings>
Extensions → Edit extension → Handset
<subscr_sip_hs_idx idx="1-1000">VALIDVALUE</subscr_sip_hs_idx>
Specifies which handset id is associated to which extension/account, e.g., if set <subscr_sip_hs_idx idx=1>1</subscr_sip_hs_idx> will use the first configured handset with the first configured account, etc.
1, 2, 3, 4, etc.
empty