Configuring Multilink PPP over Frame Relay on a Virtual Template Interface
To configure Multilink PPP over Frame Relay on a virtual template interface, complete the following steps.
Note These steps apply if you are using the Cisco 7500 series router or the Cisco 7600 series router only. If you are using another series of Cisco router, do not complete these steps. Instead, advance to "Configuring Multilink PPP over Frame Relay on a Multilink Group Interface" section.
Can somebody explain why we cannot/should-not use virtual-template for non 7500/7600?