This document discusses the benefits of a gateway trunk compared to an existing phone infrastructure. A gateway trunk offers least cost routing for outgoing calls which can save up to 40% on normal charges. It does not require changes to existing configurations and allows for easy expansion of outgoing call capacity without maintenance costs. The document also mentions existing phone infrastructure disadvantages like dependence on a single telkom line and trunk as well as expensive expansion costs.

1. Gateway Trunk Overview & Benefits

3. Single trunk

4. No Smart inbound & outbound route

5. Depend on existing cabling infrastructure

7. Add more capacity for outgoing calls easily

9. Implementation Model

10. Gateway With PABX

11. Gateway with IP PBX