Refer to the exhibit. Users complain that the message waiting light on the IP phone does not light up when receiving a new voicemail. With which codec must the engineer configure a dial peer on Cisco

The correct answer is C. G.711ulaw. Message Waiting Indicator (MWI) notifications in Cisco Unified Communications Manager Express (UCME) are sent using SIP NOTIFY or SCCP messages and require a compatible voice codec on the dial peer used for MWI traffic. Cisco UCME uses G.711ulaw for MWI signaling traffic by defau

Cisco Unity Connection and Cisco Unity Express

Question

Refer to the exhibit. Users complain that the message waiting light on the IP phone does not light up when receiving a new voicemail. With which codec must the engineer configure a dial peer on Cisco UCME for MW1 traffic to resolve this issue?

Exhibit

Options

AG.729r8
BG.729ar8
CG.711ulaw
DG.711alaw

How the community answered

(33 responses)

A
15% (5)
B
3% (1)
C
73% (24)
D
9% (3)

Explanation

Message Waiting Indicator (MWI) notifications in Cisco Unified Communications Manager Express (UCME) are sent using SIP NOTIFY or SCCP messages and require a compatible voice codec on the dial peer used for MWI traffic. Cisco UCME uses G.711ulaw for MWI signaling traffic by default; this codec must match on the dial peer to allow MWI NOTIFY messages to be processed correctly and light the MWI lamp on IP phones. G.729 variants are compressed codecs and are not used for MWI signaling. G.711alaw is the European variant and is not the default for North American deployments (Answer C).

Topics

#MWI#Voicemail#Codec#Cisco UCME

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