-
Capital
expense and return on investment
-
Quality
and reliability of telephone service
-
Justification
of strategic and financial
value and operational benefits
-
Minimizing
disruption in services
-
User
adjustments, training on new applications
-
Migration
path, inter-operability with existing equipment and scalibility
-
Gradual
deployment or 'forklift' adoption
-
Management
and maintenance skills
-
Inter-operability
over WAN and multi-carriers
-
Company
specific problems such as prior commitment and internal politics