Definition[]
A surveillance switch is
“ | [t]he circuit switch which identifies calls made from or to the target and which performs surveillance. This is normally the local exchange (or end-office) serving that target. [1] | ” |
A surveillance switch is
“ | [t]he circuit switch which identifies calls made from or to the target and which performs surveillance. This is normally the local exchange (or end-office) serving that target. [1] | ” |