300-085 · Question #57
When using VPIM Networking for messaging between Cisco Unity servers in different directories, which two factors should be considered for Audio Format Conversion settings? (Choose two.)
The correct answer is A. network bandwidth between the local and remote Cisco Unity servers B. traffic volume of messages. VPIM Audio Format Conversion settings must account for available bandwidth and message traffic volume to avoid network congestion and server overload.
Question
When using VPIM Networking for messaging between Cisco Unity servers in different directories, which two factors should be considered for Audio Format Conversion settings? (Choose two.)
Options
- Anetwork bandwidth between the local and remote Cisco Unity servers
- Btraffic volume of messages
- Cnetwork latency between the local and remote Cisco Unity servers
- DAudio Format of the outbound message
- EDSCP flags on the packet
How the community answered
(27 responses)- A56% (15)
- C11% (3)
- D26% (7)
- E7% (2)
Why each option
VPIM Audio Format Conversion settings must account for available bandwidth and message traffic volume to avoid network congestion and server overload.
Network bandwidth directly determines whether audio must be converted to a lower bit-rate format before transmission; insufficient bandwidth between Unity servers can cause message delivery failures or delays if large unconverted audio files are sent.
High traffic volume multiplies the processing load of any conversion performed, so the number of messages transiting the VPIM link must be factored in when deciding whether to enable conversion and at what codec settings.
Network latency affects real-time voice quality but not the codec selection logic used by VPIM Audio Format Conversion, which is concerned with file size and bandwidth rather than round-trip delay.
The audio format of the outbound message is the output of the conversion process, not an input factor that drives the conversion settings decision.
DSCP markings are a QoS mechanism for prioritizing packets in transit and have no bearing on the audio codec or format chosen for VPIM message encoding.
Concept tested: VPIM Networking audio format conversion factors
Source: https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/connection/10x/networking/guide/10xcucnetx/10xcucnetx_chapter_010.html
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