... 95134-1706USAhttp://www .cisco. com Cisco Systems, Inc. Corporate Headquarters Tel:800 553-NETS (6387)408 526-4000Fax:408 526-4100 Cisco IP Telephony QoS Design Guide Cisco CallManager Release ... network can lower overall costs of the enterprise communications infrastructure, solid planning and design is still required for a successful Cisco AVVID deployment. Nowhere is this fact more ... admission control in Cisco CallManager to block the third call. For more information on call admission control, see the Cisco IP Telephony Network Design Guide, available athttp://www .cisco. com/univercd/cc/td/doc/product/voice/ip_tele/index.htmFigure...