Installation guide

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Cisco AS5850 Universal Gateway Commissioning Guidelines
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Information About Cisco AS5850 Universal Gateway Commissioning
The Cisco AS5850 universal gateway basic interfaces are as follows:
• Egress connects to the IP backbone
• Ingress connects from the PSTN
Figure 1 shows the Cisco AS5850 system architecture.
Figure 1 Cisco AS5850 System Architecture
Route-Switch-Controller Card
The route-switch-controller (RSC) card is the main processor card for the universal gateway. It installs
in either slot 6 or slot 7 and plugs directly into the backplane, and performs the following functions:
• Transfers data as Fast Ethernet or Gigabit Ethernet packets encapsulated in proprietary protocol.
This connection is also used for management.
• For egress, can connect to the IP backbone via two Gigabit Ethernet ports (in Figure 1, the RSC card
uses GigabitEthernet6/0 or GigabitEthernet6/1 to connect to the IP backbone).
• Boots and reloads its own Cisco IOS software image.
• Provides source clocks for use by all feature cards and power supplies. Extracts an external
reference clock from an external E1 or T1 signal through a BNC connector on the front panel.
• Can connect to an external alarm source through a DB-15 serial connector on the front panel.
• Provides a console port for initial configuration and maintenance.
T1/E1
CAT5
T3
COAX
OC3/STM-1
SMF
Modem
Twisted pair
Backbone
Network 1
(Gigabit Ethernet)
Backbone
Network 0
(Gigabit Ethernet)
Cisco AS5850
universal gateway
Backplane
2
1
T1/E1 trunk card
T3
universal port card
OC3/STM-1 trunk card
universal port card
GigE egress RSC
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