by Olivier | Feb 22, 2010 | CUCM, Lab, Non classé, Trace/Monitoring, Written Theory
For call processing under the CUCM , you can find 2 types of traces :
- System Diagnostic Interface (SDI) : SDI informations are traces from services and logs from run-time event.
- System Diagnostic Layer (SDL) : SDL informations are traces from services as CUCM , CTI Manager and it stores logs state transitions between the node.
Most of the time , SDI traces will be the traces where you can find all stimuli and all interesting call processing traces regarding your phones. With a little knowledge ,it is not very difficult to read these traces
SDL traces are the transition states between the nodes and they are used more by Cisco TAC
by Olivier | Feb 21, 2010 | CUCM, Lab, Non classé, Written Theory
Just a little reminder to say that the logical decision to route a call is based on the following order:
Route Pattern => Route List => Route Groups => Gateway .
But take also in mind that the configuration order is the reverse path.
by Olivier | Feb 21, 2010 | CUCM, Non classé, QOS, UCCX, Uncategorized, Written Theory
The call load is referred to as Busy Hour Call Attempts ( BHCA) which is the maximum number of active calls during the busiest hour of the day .
by Olivier | Feb 20, 2010 | H.323, IOS, Lab, Non classé, Written Theory
As reminder , don’t forget that in pattern expression , * and # are valid expressions.
So in fact you have 0,1,2,3,4,5,6,7,8,9,*,#
by Olivier | Feb 20, 2010 | H.323, IOS, Lab, Non classé, Written Theory
As we have already seen it before , if the voice gateway is unable to match an inbound leg for the call , your call will take the properties of the PVID0 .
Don’t forget that you can’t update any properties if the PVID0 is hitted .
Let’s review then the specificities of this default dial-peer:
For POTS dial-peer
- No IVR applications possible
For VOIP dial-peer
- Any codec
- fax-rate voice
- ip precedence 0
- No Resource Reservation Protocol ( RSVP)
- VAD enabled
by Olivier | Feb 20, 2010 | H.323, IOS, Non classé, Written Theory
As seen with the inbound dial-peer matching , outbound matching is much easier as the dial-peer matches on the destination-pattern expression.
Then the outbound will be selected with the port if you have a POTS dial-peer or will take the session-target in you have a VOIP dial-peer
