What is an INI?

[Beattiejr]

What exactly does an INI do? I ask this because on a couple of accasions I have had the situation (on 81c's) where an INI failes to complete successfully.

In such a situation, I want to find what is not working, hence I ask the question, what components of the system does an INI address, and what can prevent it being successfully completed.

Thanks in advance for your help.

 

[johnpoole]

ballpark dis-cript. clears the ram.. look at the rls of all your common cards, that is a sure block of a clean ini. the cni's in my 81 were older rls, one ini caused 4 more which caused a hard restart.. except for upgrades i haven't needed an ini for years.. used to happen to often around rls 16, even worse in the 11.. a clean ini does not disconnect calls in progress. it drops calls on hold, being transfered etc..

john poole
bellsouth business
columbia,sc

 

[ewaver]

RAM memory is divided into Unprotected & Protected data, & Program store. Unprotected data is for call registers which are used for each call with data like call state(established, ringing etc), timeslot, orig & term TNs, digits dialed. Also for each set or trunk used on a call, a block of tempoaryb (unprotected) memory is required. This is the area of memory that is wiped clean in an INI. The 1st offhook after an INI will obtain a new Unprot. memory block.
Calls stay up because they use the network card memories to interchange timeslot TDM samples.
Protected data in memory contains set information that doesn't change until a MAC is done, same for CDBs RDBs, CFN etc - INI doesn't chg this data. The other RAM stores the call processing programs & is like protected data.

INIs can occur due to 1- manual button push, 2- watchdog timeout = a software proc is taking too long to finish ie a sanity timer - otherwise nothing else gets done, & 3-Response timeout means a hardware device has failed to respond in a timely fashion.

The bottom line is seconds vs minutes to keep the speechpaths going, & ensure the hardware & software vagaries are handled quickly without Reloading if possible which puts the machine out of commission for ~ minutes.

 

[johnpoole]

i knew someone would come up with the book version of that. the connect table stays up.. either way an ini should run clean and the switch should boot. not repeat, a repeating ini is usually (from experience) hardware

john poole
bellsouth business
columbia,sc