when you send a submit_sm, the message will considered pending until it receives the submit_sm_resp so if you set max-pending-submits=5 then kannel will keep sending submit_sm PDUs until there are 5 submit_sm_resp pending to arrive to kannel.
see the UG for more info about the throttling error, this depends on the carrier's SMSC, some SMSCs limits throughput to a certain speed (like 50 MTs per second) or to a certain pending submits at a time, when you exceed this limit, the excess messages will get rejected by the SMSC or the IO thread will get blocked, this also depends on the SMSC implementation at the carrier's side, actually I've seen them both Talk to your provider and ask for advice about those limits Best Regards, Mohammed M I Sleem http://www.abusleem.net - Personal blog http://www.freakle.com - The Search Freak <http://www.colorle.com> On Thu, Dec 16, 2010 at 3:30 PM, Rapture <[email protected]> wrote: > I haven’t currently set the max-pending-submits…what does the variable do > and how will this cause a throttling error? > > > Thanks. > > > > *From:* Mohammed Saleem [mailto:[email protected]] > *Sent:* Thursday, December 16, 2010 4:13 PM > *To:* Rapture > *Cc:* [email protected] > *Subject:* Re: Asynchronous submit_sm > > > > You may need to increase the max-pending-submits but this may cause a > throttling error > > > Best Regards, > > Mohammed M I Sleem > > http://www.abusleem.net - Personal blog > > http://www.freakle.com - The Search Freak > > > > On Thu, Dec 16, 2010 at 3:02 PM, Rapture <[email protected]> wrote: > > Hi pips, > > > > I have an issue with SMPP 3.4, I noticed my queues have been building up > for a while. The operator confirms delays in sending submit_sm_resp. I > noticed from the logs that kannel does not attempt to send another submit_sm > and queues build up forever. > > > > Is there a way of doing asynchronous submit_sm? Perhaps a parameter that I > can enforce? > > > > Kind Regards, > > > > Rapture > > >
