Cisco VG202 Instrukcja Użytkownika Pobierz pdf (Strona 6)

PROPRIETARY & CONFIDENTIAL

3 Network Topology

The high level Cox SIP Trunk network architecture is depicted below. The key network elements are:

 IP PBX – Customer PBX for terminating SIP Trunks.

 Cox Enterprise Session Border Controller (E-SBC) – The E-SBC is a smart service demarcation

device and SIP Application Layer Gateway (ALG) installed and managed by Cox.

 Core Session Border Controllers and Broadsoft SIP Call Server for maximum survivability and

reliability.

 PSTN Gateway for connections to the Public Switched Telephone Network (PSTN).

Figure 2 – Reference Network Architecture

This SIP Trunk network architecture is replicated across the Cox operating regions for scalability and

operational autonomy.

Cox will deploy one or more Enterprise Session Border Controllers (E-SBCs) to meet call capacity,

customer data center geo-redundancy and trunk group requirements. The E-SBC is owned and managed

by Cox and is the service demarcation point. The E-SBC performs SIP ALG, SIP normalization, NAT,

security, traffic shaping/prioritization, performance reporting and remote diagnostic functions.

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Cisco VG202 Instrukcja Użytkownika Strona 6