igMaxConfigCalls

GR-303-CORE 1.3.2 Generic IDLC Interface 
Requirements Summary. The Generic IDLC Interface
uses a separate 64-kb/s data link (DS0-channel)
to perform per-call time-slot assignments. 
igMaxActiveCalls refers to the maximum number of
calls available to this Interface Group. This is
used in conjunction with igCurrActiveCalls, the
current number of calls, to provide a metric 
for describing utilization.  Does not imply that 
a call has completed, but rather that the DS0 
time-slot has been allocated for a call by the 
GR-303 interface.
              
The DS1 frame is composed of 24 consecutively
numbered (1-24) time-slots (channels or DS0s).
              
Maximum number of active calls is the maximum 
number of DS1s assigned to the IG times the 
maximum number of channels or DS0s per DS1 
less 2 or 4 channels for primary only EOC/TCM 
and primary/secondary EOC/TCM = 
({1..28} * 24 - {2,4}) = {22..670}
              
28*24 equals maximum number of DS0's on a DS3, 
with 0 signaling channels. If you have one 
28-T1 IG with no redundancy you can have 
672 - 2 signaling DS0's , or 670, or 670 
DS0's available for active calls.
              
If you have a single-T1 IG, you have only 
24 - 2 signaling DS0's, or 22,  DS0's 
available for active calls.

MIB

ZhoneGR303-MIB

OID

.1.3.6.1.4.1.5504.4.3.1.1.1.12

Type

column

Access

readonly

Status

current

Units

calls

Parent

interfaceGroupEntry