To work with àïïàðàòóðîé Ò-230 on four wire communication lines by the resistance up to 900 ohms, as well as with manual exchanges on two wire and four wire communication lines. Without clothing
To work with àïïàðàòóðîé Ò-230 on four wire communication lines c of resistance up to 900 ohms, as well as with manual exchanges on two wire and four wire communication lines.