Method for establishing call connection, first terminal, server, and storage medium

One or more non-transitory computer-readable storage media storing computer-readable instructions, the computer-readable instructions, when executed by one or more processors of a first terminal, causing the one or more processors to perform a plurality of operations including:

• obtaining, by the first terminal, a second vocoder list of a second terminal, the second vocoder list comprising vocoders supported by the second terminal and with corresponding priorities;
• determining, by the first terminal, a first vocoder with the highest priority among vocoders that exist in both a first vocoder list of the first terminal and the second vocoder list, the first vocoder list comprising vocoders supported by the first terminal and with corresponding priorities, and the priorities of the vocoders being positively correlated with audio frequencies in encoding and decoding of the vocoders;
• and
• requesting, by the first terminal by using the first vocoder, to establish a first call connection to the second terminal.

An electronic device acting as a first terminal, comprising a memory and a processor, the memory storing computer-readable instructions, the computer-readable instructions, when executed by the processor, causing the processor to perform a plurality of operations including:

• obtaining, by the first terminal, a second vocoder list of a second terminal, the second vocoder list comprising vocoders supported by the second terminal and with corresponding priorities;
• determining, by the first terminal, a first vocoder with the highest priority among vocoders that exist in both a first vocoder list of the first terminal and the second vocoder list, the first vocoder list comprising vocoders supported by the first terminal and with corresponding priorities, and the priorities of the vocoders being positively correlated with audio frequencies in encoding and decoding of the vocoders;
• and
• requesting, by the first terminal by using the first vocoder, to establish a first call connection to the second terminal.