What is the length of IP v4 addresses (in bits)?

Which one 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?

Telephony signaling protocol suite used to set up most of the world's PSTN calls?

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.