300-085 · Question #155
Refer to the exhibit. Which six of the following commands are required to configure a dial peer that will allow voice-mail messages to be left on Cisco Unity Express for Unified Communications…
The correct answer is A. destination-pattern 4100 B. no vad C. session target ipv4:10.1.131.2 F. codec g711ulaw H. dial-peer voice 4100 voip. Routing calls from Cisco Unified Communications Manager Express to Cisco Unity Express for voicemail requires a VoIP dial peer specifying the CUE pilot number, the correct CUE module IP as the session target, a compatible codec, and VAD disabled to prevent silence-triggered…
Question
Refer to the exhibit. Which six of the following commands are required to configure a dial peer that will allow voice-mail messages to be left on Cisco Unity Express for Unified Communications Manager Express users? The Cisco Unity Express module uses a pilot number of 4100. (Choose six.)
Exhibit
Options
- Adestination-pattern 4100
- Bno vad
- Csession target ipv4:10.1.131.2
- Dcodec transparent
- Edial-peer voice 4100 pots
- Fcodec g711ulaw
- Gsession target ipv4:10.1.131.1
- Hdial-peer voice 4100 voip
- Jdtmf-relay h245-alphanumeric
How the community answered
(61 responses)- A80% (49)
- D5% (3)
- E10% (6)
- G2% (1)
- J3% (2)
Why each option
Routing calls from Cisco Unified Communications Manager Express to Cisco Unity Express for voicemail requires a VoIP dial peer specifying the CUE pilot number, the correct CUE module IP as the session target, a compatible codec, and VAD disabled to prevent silence-triggered clipping in recorded messages.
destination-pattern 4100 matches the CUE pilot number so that calls intended for voicemail are directed to the correct dial peer and forwarded to CUE.
no vad disables Voice Activity Detection on the dial peer, which is required for voicemail because VAD can drop RTP packets during silent pauses in a recording, corrupting the message.
session target ipv4:10.1.131.2 points the VoIP dial peer to the IP address of the CUE module, establishing the correct signaling and media destination for voicemail calls.
codec transparent passes through whatever codec was negotiated and does not enforce a specific codec, which can result in codec mismatch with CUE - a defined codec such as g711ulaw must be specified.
dial-peer voice 4100 pots creates a POTS-type dial peer mapped to a physical port, which cannot route calls to the CUE module over IP.
codec g711ulaw specifies the G.711 mu-law codec, which CUE supports and which provides uncompressed audio quality suitable for voicemail recording and playback.
session target ipv4:10.1.131.1 points to the CME router's own IP rather than the CUE module IP at 10.1.131.2, so calls would not reach the voicemail system.
dial-peer voice 4100 voip creates a VoIP-type dial peer, which is required because CUE communication occurs over IP, not through a physical POTS interface.
dtmf-relay h245-alphanumeric is an H.323 DTMF relay method and is not applicable when CME uses SIP signaling to communicate with the CUE module in this topology.
Concept tested: VoIP dial peer configuration for Cisco Unity Express voicemail routing
Source: https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/unity_exp/rel8_6/english/admin/guide/b_ue86ag/b_ue86ag_chapter_0111.html
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