Which of the following is used by an exchange to convert analog audio to digitized audio?

Which signaling protocol is based on the ISDN Q.931 standard?

Which ITU standard delivers faxed documents as e-mail attachments over a VoIP netwok?

How many voice conversations are possible on an E1 line simultaneously?

According to the OSI model, which layer performs the function of transforming bits of data into electrical signals and sending those signals across the media?

How many bits are there in a Class B address in Net ID (Network portion) and Host ID (Host Portion) fields by default?

QoS technique to define the maximum size of data packets to prevent excessive serialization delays?

Between Asymmetric and Symmetric transmissions, which statement is true of Symmetric transmission?

Which signaling protocol is used in a common channel to signal all other channels in ISDN?

RTP (Real-time Transport Protocol) requests retransmission if a voice packet is lost.

Functions of a voice gateway?