Refer to the exhibit. A user is going through a series of dialing steps on a SIP Type B IP phone to call a SCCP IP phon

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Refer to the exhibit.

A user is going through a series of dialing steps on a SIP Type B IP phone to call a SCCP IP phone. Both phones are registered to the same Cisco Unified
Communications Manager cluster. Assume that the calling SIP phone is associated with a SIP dial rule with a pattern value of "2001".
Which statement about how digits are forwarded to the Cisco Unified Communications Manager for further call processing is true?

Refer To The Ex 1 (84.65 KiB) Viewed 53 times

A. As each digit is pressed on the SIP IP phone, it is sent to the Cisco Unified Communications Manager in a SIP NOTIFY message as a KPML event.
B. The SIP IP phone waits for the inter-digit timer expiry and then sends each digit to the Cisco Unified Communications Manager as a separate KPML event in a SIP NOTIFY message.
C. As soon as the user selects the Dial soft key, the SIP IP phone forwards all digits to the Cisco Unified Communications Manager in a SIP INVITE message.
D. As soon as the Dial soft key is selected, the SIP IP phone forwards the first digit in a SIP INVITE and the subsequent digits in SIP INFORMATION messages.
E. The SIP IP phone waits for the inter-digit timer expiry, and then sends all digits to the Cisco Unified Communications Manager in a SIP INVITE message.