When IP Telephony is deployed for Teleworkers using the Cisco Business Ready Teleworker solution, which statements are true?（）

• A、There is lower bandwidth consumption for VoIP media streams.
• B、Teleworkers can have the same extensions and inward-dialing numbers at their office desks and home offices.
• C、Personal calls are routed directly through the residential PSTN line.
• D、Teleworkers can have different extensions at their office desks and home offices.
• E、There is less burden on Cisco CallManager for signaling traffic.
• F、Incoming calls are first routed to the office desks, then to the home offices.