zhoneAtmVclRateExtParam1

This field is used to describe the first least field  of
total 16 minimum guaranteed rate which is configurable 
by user for a VCL which is bound to this traffic 
descriptor for BAN ATM Trunk or MALC uplink Cards.
It is applicable only for RTVBR/NRTVBR or CBR 
service category. For RTVBR/NRTVBR service category,
this value can be set in the rfc2515 td_param2 of
the traffice descriptor table. For CBR service 
category, this value can be set in the td_param1 
field. The maximum rates capacitiy is 16, any 
value which is not matched in any one of those 16 
rates will be rejected.
          				
Unlike switched voice calls in the TDM world we 
cannot oversubscribe bandwidth because all of our
voice calls must be connected at all times so that
we can receive signaling to tell us that the phone 
when off hook.  Instead of oversubscribing we
suggest that the service provide under provision 
their voice calls. An example of this would be a 
normal good quality voice call over ATM requires 
about 189 CPS. To share the bandwidth
resource over several customers the service 
provider would instead 
allocate (for example) 38 CPS for a single voice 
channel, this would allow 5 channels to share the 
bandwidth required to connect a good quality voice
call. Any value less than 189 CPS could be used if 
the service provider wished to share bandwidth 
resources over more than one voice call. In order
for this method to produce a good quality voice call
enough bandwidth must be unallocated and used in a 
shared pool by all connections. When the buffering 
is not adequate for a good quality call the connection
will not terminate, instead the call quality will 
suffer. Values greater than 189 CPS would be used by 
devices like a PBX. This parameter is used independently
for transmit and receive traffic based on the traffic 
descriptor specified for transmit and receive in the VCL.

MIB

ZHONE-COM-ATM-MIB

OID

.1.3.6.1.4.1.5504.4.2.2.6.1

Type

scalar

Access

readwrite

Status

current

Parent

zhoneAtmVclRateExtParam