Avaya Administering Aura Session Manager Release 6.1 Manual de usuario descargar pdf (Pagina 250)

prevents such calls from consuming too large a percentage of the available

bandwidth of a location (Total Bandwidth).

3. If the Total Bandwidth is left “BLANK” then Session Manager does not perform

CAC for calls in the Location.

4. Allows audio and multimedia bandwidth sharing at a location by selecting the option

Audio Calls Can Take Video Bandwidth.

• If selected, then Session Manager considers only the Total Bandwidth when

deciding whether a new audio call can proceed.

• If not selected, then Session Manager considers the Total Bandwidth minus

the Multimedia Bandwidth when deciding whether a new audio call can

proceed.

5. Specifies per-call bandwidth limits (as specified in Per-Call Bandwidth

Parameters section), restricting the size of individual multimedia calls. Session

Manager alters the SDP provided by call parties by enforcing the bandwidth limits

as follows:

• Determines how much bandwidth to be reserved for each call and counts the

determined value against the provisioned limit.

• If the multimedia bandwidth is beyond what is provisioned (Maximum

Multimedia Bandwidth (Intra-Location) or Maximum Multimedia

Bandwidth (Inter-Location)), Session Manager can reduce the multimedia

bandwidth as low as the administered multimedia minimum (Minimum

Multimedia Bandwidth) limit. In such cases, users experience a reduction in

media (usually video) quality. Otherwise, calls are either alternate-routed or

denied when limit enforcement cannot be achieved by quality reduction. Audio

call quality is not modified by Session Manager.

• If Session Manager cannot allow the multimedia minimum (Minimum

Multimedia Bandwidth), then multimedia streams are removed from the call

by setting their ports to zero, which results in denying the multimedia portion

of the call

SDP functionality can be enabled by clearing the Global Settings option Ignore SDP for Call

Admission Control in the Session Manager Administration page. This setting changes the

CAC mode from “Ignore SDP” (as in Session Manager 6.0) to “Use SDP” (as in Session

Manager 6.1). This setting takes effect at cluster level in the core and hence all the Session

Manager instances are affected accordingly.

Refer to the topic on “Recommended modifications for the earlier versions of Session Manager”

for understanding the location based configuration changes required in the earlier versions of

Session Manager.

Managing Session Manager routing

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Session Manager November 2010

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Avaya Administering Aura Session Manager Release 6.1 Manual de usuario Pagina 250