Cisco Systems AS5800 ユーザーズマニュアル
Feature Overview
2
Cisco IOS Release 12.0(7)T
Benefits
Two-Stage-Dial Toll Bypass
With Voice over IP on the Cisco AS5800, you can leverage your network’s WAN infrastructure to
offer long distance toll bypass services. Toll bypass occurs in two stages. For example, customers
can be assigned an account number and a Personal Identification Number (PIN). When a user dials
a local number or a 1-800-Internet Telephone Service Provider (ITSP) number, she connects to the
local VoIP point of presence. She is then prompted by the Interactive Voice Response (IVR) to input
her account and PIN numbers. Following authentication, a second dial tone allows her to enter an
E.164 destination telephone number.
offer long distance toll bypass services. Toll bypass occurs in two stages. For example, customers
can be assigned an account number and a Personal Identification Number (PIN). When a user dials
a local number or a 1-800-Internet Telephone Service Provider (ITSP) number, she connects to the
local VoIP point of presence. She is then prompted by the Interactive Voice Response (IVR) to input
her account and PIN numbers. Following authentication, a second dial tone allows her to enter an
E.164 destination telephone number.
The local gatekeeper maps the E.164 destination telephone number to an IP address of a remote-zone
gatekeeper, which then selects a gateway to terminate the call. The gateway encodes the call,
encapsulates it in Real Time Protocol (RTP) packets and routes it over the WAN to the remote
gateway. The remote gateway decodes the call and delivers it to the receiver.
gatekeeper, which then selects a gateway to terminate the call. The gateway encodes the call,
encapsulates it in Real Time Protocol (RTP) packets and routes it over the WAN to the remote
gateway. The remote gateway decodes the call and delivers it to the receiver.
For information about configuring IVR, refer to the Cisco IOS Release 12.0(7)T Configuring
Interactive Voice Response for Cisco Access Platforms feature module.
Interactive Voice Response for Cisco Access Platforms feature module.
Figure 1 illustrates this benefit.