What is the maximum length of any numeric geographic area address in ITU recommendation E.164?

Refer to the exhibit. Which DTMF relay method is advertised when the originating SIP
gateway sends an INVITE message with a Call-Info header shown?

How are DTMF digits transported in RFC 2833?

Refer to the exhibit. A user is going through a series of dialing steps on an SCCP IP phone
(extension 1001) to call another SCCP IP phone (extension 2003). Both phones are
registered to the same Cisco Unified Communications Manager cluster. Which user inputs are
sent from the calling IP phone to the Cisco Unified Communications Manager, in forms of
SCCP messages, after the user pressed the Dial softkey? Note that the commas in answer
choices below are logical separators, not part of the actual user input or SCCP messages.

Which two compression formats for high-definition video have technical content that is
identical to H.264? (Choose two.)

Which H.245 information is exchanged within H.225 messages in H.323 Fast Connect?

Which two responses are examples of client error responses in SIP protocol? (Choose two.)

Refer to the exhibit. If this SIP call is initiated using delayed offer, which SIP message will
UA#1 use to communicate its media capability to UA#2?

Refer to the exhibit. If this SIP call is initiated using early offer, which SIP message will UA#2
use to communicate its media capability to UA#1?

Which two SDP content headers can be found in a SIP INVITE message? (Choose two.)