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Vanguard 7300 Enclosures and Components 2-27
Vanguard 7300 Cards
T1/E1/PRI Rear
Transition Module -
Rear Panel
The T1/E1/PRI Rear Transition Module connects to the T1/E1/PRI card at the
Vanguard 7300 midplane. The T1/E1/PRI Rear Transition Module provides 12
RJ48C connectors accessible from the rear of the chassis and shown in Figure 2-18.
Figure 2-18. T1/E1/PRI Transition Module, Rear View
Pinouts See Appendix B, Vanguard 7300 Cable Connectors and Pinouts for the port pinouts.
Voice Server/DSP Mezzanine Card (PMC)
Description To support digital voice functions, a Voice Server PCI PMC must be installed on the
T1/E1/PRI card. The Voice Server PMC is a customized card designed to be
mounted only on the Vanguard 7300 T1/E1/PRI card. This PMC cannot be installed
anywhere else. Figure 2-16shows the PMC mounted on the T1/E1/PRI card.
Functions A Voice Server PMC supports up to 48 T1 voice channels and 60 E1 voice channels
per card. The Voice Server PMC provides these functions:
• Voice compression and decompression by G.723.1, G.279A, and G.711
• Signal processing
• Digital voice processing functions
• Voice Activity Detetion (VAD) or Digital Speech Interpolation (DSI)
• Echo Cancellation (up to 16 ms. delay)
• Adaptive Smoothing Delay
• Dynamic Modem support
• Fax support
Note
The Voice Server PMC has no physical ports of its own. Voice ports can only
terminate on the first two ports on the T1/E1/PRI card rear transition module.
Note
Digital Voice ports are booted twice when the node is warm-booted. Two “port
boot complete” messages are displayed.
Serial No. Location