Cisco AS5350XM Configuration Manual page 79

Basic Configuration Using the Command-Line Interface
If you are having trouble:
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Configuring DS0 Trunk Group Dial Out
The DS0 Trunk Group Dial Out feature adds functionality that enhances outbound call routing by giving
the user control over individual DS0 lines for outbound calls. Previous to this feature, outbound DS0
lines could not be configured separately from DS1 lines. The dial out capabilities of a DS1 line applied
to all DS0 lines under that DS1 line.
Currently, the aggregation of DS1 lines into trunk groups is done through the Trunk Group Resource
Manager (TGRM). The DS0 Trunk Group Dial Out feature enables the TGRM subsystem to aggregate
DS0 lines into trunk groups also. The dial out capabilities of these DS0 trunk groups can then be
configured directly at the DS0 level through the TGRM CLI and by setting the authentication
authorization and accounting (AAA) attributes.
The configuration of DS0 lines for outbound calls enables the Dial on Demand feature to initiate
outbound calls over a set of B channels.
DS0 dial out trunk groups are configured on a Network Access Server (NAS). They support both digital
and asynchronous calls and can be configured for ISDN PRI and Non-Facility Associated Signaling
(NFAS) circuits.
A trunk group is a logical grouping of multiple T1 or E1 interfaces with the same signaling
characteristics. A single trunk group can contain up to 64 trunks. Each trunk group can consist of DS0
lines from different circuits, but each individual DS0 line can belong to only one trunk group.
DS0 dial out trunk groups can be provisioned for dial out only at present and should not be provisioned
Note
as targets of dial peers.
DS0 dial out trunk groups do not support voice interfaces.
Note
Trunk Group Resource Manager
The Trunk Group Resource Manager (TGRM) supports the logical grouping, configuration, and joint
management of one or more interfaces. The TGRM is used to store configuration information and to
accept or select an interface from a trunk group when requested.
A trunk group is provisioned as the target of a dial peer or a dial out profile on an AAA server, and the
TGRM transparently selects the specific interface and channels to use for incoming or outgoing calls.
Trunks are selected based on the trunk that is least used (default configuration) or the hunt scheme
configured.
Using trunk groups simplifies the task of configuring dial peers and interfaces, and also enables the
dynamic selection of interfaces as needed in the access server.
Make sure the cable connection is not loose or disconnected if the Layer 1 Status is "Deactivated."
This status message indicates a problem at the physical layer.
There may be a problem with your telco, or the framing and line code types you entered may not
match those of your telco. A Layer 2 error indicates that the gateway cannot communicate with the
telco. There is a problem at the data link layer.
Cisco AS5350XM and Cisco AS5400XM Universal Gateways Software Configuration Guide
Configuring DS0 Trunk Group Dial Out
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