Voice Call

Last updated: 2010-03-10

AMR Setup

AMR Source

The following AMR Sources are available in the test set:

• Echo

While in ECHO, the test set loops the transport blocks arriving from the UE on the uplink back down to the UE (unaltered) on the downlink. There is a fixed voice echo delay of 0.5 seconds.

• Real-Time Vocoder

GPIB command: CALL:SERVice:AMR:SOURce

This parameter can only be set when Call/Data Status is Idle.

Speech Echo Loopback Delay

This setting specifies the amount of time that speech frames received on the uplink are delayed before being retransmitted on the downlink.

This setting cannot be changed when the cell operating mode is Active Cell and the call/data status is any state other than IDLE, or the test set will reject the change and an error will be reported.

GPIB command: CALL:SERVice:AMR:SPEech:ECHO:LOOPback:DELay

AMR Radio Access Bearer

The AMR Radio Access Bearer can be set to:

• 12.2k Voice (3GPP TS 34.108 s6.10.2.4.1.4)

• 10.2k Voice (3GPP TS 34.108 s6.10.2.4.1.5)

• 7.95k Voice (3GPP TS 34.108 s6.10.2.4.1.6)

• 7.4k Voice (3GPP TS 34.108 s6.10.2.4.1.7)

• 6.7k Voice (3GPP TS 34.108 s6.10.2.4.1.8)

• 5.9k Voice (3GPP TS 34.108 s6.10.2.4.1.9)

• 5.15k Voice (3GPP TS 34.108 s6.10.2.4.1.10)

• 4.75k Voice (3GPP TS 34.108 s6.10.2.4.1.11)

This parameter can only be set when call status is idle. Note: "k" refers to kbps.

GPIB command: CALL:SERVice:AMR:RAB

Related Topics

Manual Operation: Set Up a Call and Make a Connection