Re: at2 DLR weirdness

  Oded Arbel wrote:

> Mat wrote:
>
>> The goal is to monitor the SMSC connection with the GSM modem.
>> For this, I send a specific keyword with the modem,  and I wait for 
>> the answer.
>> In order to make the tests more reliable, I use a dlrmask=31 when I 
>> send the MO,
>> so our monitoring don't shout for a stupid network problem.
>> This part works almost fine, but the success isn't as accurate:
>> Sometimes when I send an SMS with the modem, I got a DLR call with a 
>> value of 1
>> which should mean that the MO has been delivered. Before the 
>> dlrvalue=1,  I can
>> have a DLR call with dlrvalue=8  or dlrvalue=4. 
>
>
> 8 (SMSC_SUCCESS) means that the modem successfuly sent the message to 
> the network and received the network's message ID for that SM. 4 
> (BUFFERED) means that the message was stored on the network (modem's 
> SMSC peer)  but was not forwarded to the recipient yet. this message 
> will only be received if the network was unable to deliver the SM 
> imidietly.
>
>> The fact is that these messages never came to my servers, and I have 
>> incomming traffic. 
>
>
> dlrvalue = 1 (DELIVERED) means that the destination acknowledged the 
> reception of the message and the modem's peer SMSC has forwarded that 
> acknowledgment to the modem. when that DLR is sent out by kannel, you 
> should have already received the MO on your server, if not - check 
> your SMSC connection - apparently, your SMSC acknowledges SM reception 
> for you but does not forward you the message.
>
> At m-Wise we implement similar functionality, and noticed that at 
> times we lose messages on the network even though a DELIVERED dlr has 
> been received. this is usually due to some SMSC abstraction (we 
> usually do not conenct directly to the network SMSCs, but to a network 
> operator's abstraction layer) that drops messages on the floor at 
> convinient times.
>
> -- 
> Oded Arbel
>
>
Ok! So if I understand well, I've to spank my operator because he has a 
broken SMSC ?
Do you think I can discuss with them if I provide them network message 
IDs of lost messages ?
Is it easy to make these IDs appear in the kannel logfiles ?

Thank you!