10.7 Cisco Unified Mobility Access List Functions

This topic describes how to implement call filtering for Cisco Mobile Connect calls.

  • Remote destination configuration page offers a Ring Schedule pane.
  • Ring schedule can be generally enabled (all the time) or explicit time ranges can be configured.
  • Time ranges are configurable per day of week:
    1. Enable the whole day (24 hours).
    2. Specify a time range (From, To).
  • Caller IDs can still be limited by access lists at remote destination configuration page (at administrator and user web page):
    1. Allowed Access List (Ring This Destination Only if Caller Is in <Access List>)
    2. Blocked Access List (Do Not Ring This Destination if Caller Is in <Access List>)

In the Cisco Unified Communications Manager, the end user and the administrator can control access to remote destinations, based on the time of the day and the day of the week.

To support access to remote destinations that is based on time of day, the remote destination configuration page allows the configuration of a ring schedule. This schedule applies to the remote-destination configuration page on both the administrator and user web pages.

The remote destination can be generally enabled (enabled all the time), or explicit time ranges can be configured. The default is to enable the remote destination all the time.

When an explicit time range is configured, each day of the week can be disabled, enabled for the whole day (24 hours), or configured with a From and To time range.

Access lists can limit caller IDs. These lists are applied at the remote-destination configuration page:

  • The Allowed Access List access list setting is called Ring This Destination Only if Caller Is in <Access List>.
  • The Blocked Access List access list setting is called Do Not Ring This Destination if Caller Is in <Access List>.

Operation of Time-of-Day Access Control

The figure shows the operation of time-of-day access control.

  • Remote destination will ring only during specified ring schedule (regardless of access list configuration).
  • If no access list is configured, all callers are permitted during specified ring schedule.

Two things must be considered when using time-of-day access control to remote destinations:

  • The remote destination rings only when the call is received during the specified ring schedule. This first decision is independent of the access-list configuration.
  • If no access list is configured, all callers are permitted. However, this permission applies only after the first check (the call received during the specified ring schedule). If a caller is permitted according to an access-list configuration but the call is received outside the configured ring schedule, the call is not extended to the remote destination.

The figure shows how a call is processed when it is received at a shared line that is configured at a remote destination profile.

For each remote destination that is associated with the called line, the ring schedule that is configured at the remote destination is checked in the following way:

  • If the call is received outside the configured ring schedule, the remote destination does not ring.
  • If the call is received within the configured ring schedule, the access-list configuration of the remote destination is checked. If the caller ID is permitted, the remote destination rings. If the caller ID is not permitted, the remote destination does not ring.

The caller ID is permitted in the following scenarios:

  • The Always Ring the Destination parameter is selected.
  • An access list is applied by using the Ring This Destination Only if Caller Is in <Access List> parameter, and the caller ID is found in the specified access list.
  • An access list is applied by using the Do Not Ring This Destination if Caller Is in <Access List> parameter, and the caller ID is not found in the specified access list.