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 PA-VXC-2TE1+, Cisco PA-VXC-2TE1+, 2 Port T1/E1 High-Capacity Enhanced Digital Voice Port Adapter
The Cisco enhanced digital voice port adapters (PA-VXC-2TE1+, PA-VXB-2TE1+, PA-VXA-1TE1-24+, and PA-VXA-1TE1-30+) for the Cisco 7000 Series routers provide high-capacity voice, termination to private branch exchanges (PBXs), and the Public Switched Telephone Network (PSTN) for central-site and large-branch packet voice applications.
The enhanced digital voice port adapter family consists of three members: the Two-Port T1, E1 High-Capacity Enhanced Digital Voice Port Adapter (PA-VXC-2TE1+), the Two-Port T1, E1 Moderate-Capacity Enhanced Digital Voice Port Adapter (PA-VXB-2TE1+), and the One-Port T1, E1 Enhanced Digital Voice Port Adapter (PA-VXA-1TE1-24+, PA-VXA-1TE1-30+). Supported on the Cisco 7200, 7400, and 7500 Series routers, all three port adapters offer the same industry-leading feature set and performance. The cards differ only in their overall voice-channel capacity.
Both enhanced digital voice port adapters are highly integrated solutions offering a leap forward in voice-channel density and application flexibility. These single-width port adapters incorporate two universal ports that can be configured for either T1 or E1 connection with high-performance digital signal processors (DSP) that support up to 120 channels of compressed voice (see Table 1 for channels supported on each port adapter). Integrated channel service units/digital service units (CSU/DSU) echo cancellation, and Digital Signal Level 0 (DS0) drop and insert functionality eliminate the need for external line-termination devices and multiplexers, which simplifies network design and management. |