Configure Voice Services Interfaces

The Adaptive Services (AS) Physical Interface Card (PIC) supports the compressed real-time transport protocol (RTP) on the interface type vsp-fpc/pic/port. This enables voice-over-IP (VoIP) traffic to use low-speed links more effectively, by compressing the 40-byte IP/User Datagram Protocol (UDP)/RTP header down to 2 to 4 bytes in most cases.

The voice services feature uses a bundle configuration similar to link services interfaces. For more information, see Configure Multilink and Link Services Interfaces. To configure voice services interface properties, include the following statements at the [edit interfaces] hierarchy level:

[edit interfaces]

interface-name { 

    encapsulation ppp;

    unit logical-unit-number {

        family mlppp { 

            bundle vsp-fpc/pic/port;

        }

    }

}

vsp-fpc/pic/port {

    unit logical-unit-number {

        encapsulation mlppp;

        family inet { 

            address address;

        }

        compression { 

            rtp {

                f-max-period number;

                queues [queue-numbers];

                port {

                    minimum port-number;

                    maximum port-number;

                }

            }

        }

    }

}

Voice services do not require a separate service rules configuration.

This chapter contains the following sections:

• Configure Voice Services Properties
• Configure the Bundle Interface
• Example: Configure Voice Services