1.8 Toll Restriction (TRS)/Call Barring (Barring) Features
1.8.5Walking COS
Description
An extension user can use another extension telephone with the COS assigned on his own extension temporarily. The extension accesses his own extension from another telephone and operates features with the same conditions which are assigned his own extension. It is one of the remote operations. An extension personal identification number (PIN) is required to use this feature ( 
1.26.1 Extension Personal Identification Number (PIN)).
Conditions
•The following items are applied:
–COS programming
–Budget Management (
1.8.2 Budget Management)
–Itemised Billing code for ARS (
1.9.1 Automatic Route Selection (ARS))
–Extension number recorded on the SMDR (
1.25.1 Station Message Detail Recording (SMDR)).
•Walking COS through DISA
This feature is also available through the DISA. ( 
1.16.6 Direct Inward System Access (DISA))
Feature Guide References
2.2.1 Class of Service (COS)
User Manual References
User Manual
1.2.7 Calling without Restrictions
