Global Dial Plan Replication, you must assign a distinct route string for each
cluster in the ILS network.
Route String must contain
only alphanumeric characters (A-Z,a-z,0-9), dots (.) or dashes (-), not more
than 64 characters in length.
route strings are used with domain-based routing, route strings do not have to
match a specific domain—you can assign whatever route strings you want.
When you assign a
route string to a cluster, ILS associates that route string to all the global
dial plan data that is local to that cluster (including locally configured
directory URIs, alternate numbers, advertised patterns, and PSTN failover
information). If Global Dial Plan Replication is enabled, ILS advertises the
local route string and the rest of the global dial plan data to the ILS
Unified Communications Manager clusters to route to the route string,
for each cluster in the ILS network, you must configure SIP route patterns that
match the route strings in the ILS network and route calls that are destined
for those route strings to SIP trunks that lead to the next-hop clusters in
your ILS network.
When a user in a
remote cluster dials a directory URI or alternate number that was learned
Unified Communications Manager matches the associated route string to
a SIP route pattern, and routes the call to the trunk that is specified by the
SIP route pattern.
You can assign a
route string to the local cluster in the ILS Configuration window.