What type of Coders/Decoders are the ISC capable of supporting?

The correct choice identifies the types of Coders/Decoders that are supported by the ISC. G.711, G.723.1, G.726, and G.729ab are all widely recognized audio codecs utilized in various digital communication applications, particularly in VoIP and telecommunication.

G.711 is a pulse code modulation codec commonly used in traditional telephony, providing high audio quality. G.723.1 is designed for low bandwidth scenarios, making it suitable for applications where conserving bandwidth is crucial. G.726 is an adaptation of G.711 offering various bit rates suitable for different network conditions. Finally, G.729ab adds further efficiency by enabling lower bandwidth use while maintaining decent audio quality, especially essential in network environments with limited resources.

The combination of these codecs in the correct choice reflects a robust support for a variety of communication needs, especially in environments where both quality and bandwidth adaptability are necessary. This capability allows the ISC to cater to a broad range of scenarios from high fidelity audio needs to those requiring more efficient bandwidth usage.