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Carrier Sensitive Routing User Guide
Chapter1 Overview of Cisco Carrier Sensitive Routing
CSR Limitations
CSR Limitations
• When two rules are available (a rule associated with the carrier and a rule associated with a route),
the rule associated with the carrier is chosen first. If one of the rules (carrier’s rule) does not exist,
the rule associated with a route is used.
• When two contact lists are available (the contact list associated with the carrier and the contact list
associated with the EgressRouteAttribute), the carrier’s contact list is used first. If one of the contact
lists (carrier’s contact list) does not exist, then the contact list associated with the
EgressRouteAttribute is used.
• If a contact is provisioned with a DNS name and a DNS server is not found—that is, cannot get an
IP address—the dataset verification fails and the CSR cannot be started correctly.
• Static triggers are not supported by the CSR.
• Performance may deteriorate if more than five gatekeepers are connected to the CSR. This is also
related to hardware capabilities and call volume.