Installation guide

Cisco AS5850 Universal Gateway Commissioning Guidelines

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Information About Cisco AS5850 Universal Gateway Commissioning

• Supports SNMP for management information and enables retrieval of syslog information for

troubleshooting.

• Provides high availability when configured in handover-split mode.

Note If there are two RSCs in the chassis, they can be configured in classic-split mode or

handover-split mode. For more information on configuring the RSC, see the Cisco AS5850

Operations, Administration, Maintenance, and Provisioning Guide at

http://www.cisco.com/univercd/cc/td/doc/product/access/acs_serv/as5850/sw_conf/

5850oamp/index.htm.

The Dial Shelf Interconnect Protocol (DSIP) enables communication between RSC and feature cards:

• Trunk cards connect to the public switched telephone network (PSTN) and fit in slots 0-5 and 8-13

only.

–

In classic-split mode, the RSC card in slot 6 controls slots 0-5; the RSC card in slot 7 controls

slots 8-13.

–

In handover-split mode, each RSC can take over the feature cards of the other RSC if that RSC

fails.

• Universal port cards also fit in slots 0-5 and slots 8-13, between the trunk cards and the RSC cards.

The universal port card supports voice, modem, or fax connections. Each port can carry one DS0 of

network traffic.

Call-Processing Components

As shown in Figure 2, the following components process a call:

• Client modems and ISDN routers dial in to the universal gateway through the PSTN.

• Asynchronous PPP calls (analog) connect to ports inside the universal gateway.

• Each port inside the universal gateway provides a corresponding TTY line and asynchronous

interface for terminating character and packet mode services.

• Asynchronous interfaces clone their configurations from a group-async interface.

• Synchronous PPP calls (digital) connect to serial interface channels (for example, S0/0:1:23 and

S2/0:2:23).

• Synchronous interfaces clone their configurations from a dialer interface.