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Chapter 4 - Hardware Description
4-48
IVR/Greet & Guide Welcome Slide
Up to four video slides can be stored on the MUX+ card, in the same way that
they are stored on the MUX card. In a mixed system with MUX and MUX+
cards, the Welcome slide is downloaded to all MUX/MUX+ cards.
MUX+ Port Capacity
MUX+ resources are allocated at the reservation stage. MUX+ resources are
calculated according to the relative weight assigned to the different line rates.
Using the dynamic allocation mechanism, the MUX+ eliminates
fragmentation and enables better utilization of resources. For example, a
participant connecting at a line rate of E1 requires 10 times more resources
than a participant connecting at a line rate of 128 Kbps.
Encrypted participants always require MUX+ resources and use more
resources than a regular participant as shown in Table 4-3, "MUX+ Cards
Port Capacity."
In a system with only MUX+ cards, both encrypted and non-encrypted
participants resources are allocated and calculated according to the relative
weight assigned to the different line rates during a reservation. For example, a
MUX+40 card can host 72 non-encrypted or 48 encrypted participants in a
conference using a line rate of 128 Kbps.
In a system with both MUX and MUX+ cards, non-encrypted participants are
assigned ports based on available MUX/MUX+ resources, the requested line
rate and MUX card configuration. The resource report mechanism first
allocates resources on the regular MUX card before allocating (non-
encrypted) participants to the MUX+, thereby saving resources on the
MUX+. In this scenario, the allocation mechanism first checks if the MUX is
identical to the card requested line rate configuration. If it is, the system
allocates resources on the MUX card. If not, it will reserve resources on the
MUX+ card, to prevent fragmentation and prevent resources. For example, a
standard MUX card configured to support a line rate of 384 Kbps, a
participant connecting at this identical line rate is reserved on a MUX card.
However, a participant connecting at a line rate of 128 Kbps is allocated a
port on MUX+ card to save resources. If the MUX+ has no resources
available, the participant is re-allocated to the standard MUX card.