The TCP connection is easily checked (manually) if you use netstat or you telnet <SMSC_IP> <SMSC_PORT>
You will not get a prompt, but something like this: Trying aaa.bbb.ccc.ddd... Connected to smsc.server.yourcarrier.com (aaa.bbb.ccc.ddd). Escape character is '^]'. Besides, if you can receive any kind of SMPP traffic, the TCP connection IS up. Did you tried my second advise? Regards, Rodrigo. On 12/22/05, Alberto Devesa <[EMAIL PROTECTED]> wrote: > Hi Rodrigo, > > First of all thank you for your time. > > It is very difficult to check if the TCP connection with the SMSC is up > because that error is not very usually and when I see the error in the logs > the connection is already reestablished by kannel. > > Anyway if the connection was broken I guess that the enquire link send by > kannel should appear in the logs without its correspondig enquire link resp > from smsc or, at least, kannel should try to reconnect inmeadtly and not 300 > seconds after. Am I wrong about this ? > > > Regards, > Alberto > > > > On Thursday 22 December 2005 15:34, Rodrigo Cremaschi wrote: > > Hola Alberto: > > > > Maybe your transmitter disconnects and that is why Kannel cannot > > send any more SMPP packets to your SMSC. > > > > - Did you check if both transmitter and receiver are connected? > > - Try to send some SMS to a phone as a keep-alive before the 6 minute > > period, and see if the problem persists. (Some SMSCs behave strangely > > and disconnect the ESME if they don´t get an SMS, even if you send > > enquire links...). In this particular case, you should disconnect and > > reconnect :( > > > > I hope this may be of help. > > > > Rodrigo. > > > > On 12/21/05, Alberto Devesa <[EMAIL PROTECTED]> wrote: > > > Hello, > > > > > > I am getting a strange behaviour while connected to a SMPP SMSC. Kannel > > > is sending an enquire link each 60 seconds (as configured) but at a given > > > moment it stops sending enquire links and after 6 minutes it complains > > > about not receiving response from SMSC but it seems that really it is > > > kannel who does not send the enquire link. > > > > > > Here are the logs: > > > > > > > > > Enquire link n: > > > > > > 2005-12-21 19:43:22 [30798] [7] DEBUG: SMPP[smpp1]: Sending enquire link: > > > 2005-12-21 19:43:22 [30798] [7] DEBUG: SMPP PDU 0x81bb170 dump: > > > 2005-12-21 19:43:22 [30798] [7] DEBUG: type_name: enquire_link > > > 2005-12-21 19:43:22 [30798] [7] DEBUG: command_id: 21 = 0x00000015 > > > 2005-12-21 19:43:22 [30798] [7] DEBUG: command_status: 0 = 0x00000000 > > > 2005-12-21 19:43:22 [30798] [7] DEBUG: sequence_number: 1729 = > > > 0x000006c1 2005-12-21 19:43:22 [30798] [7] DEBUG: SMPP PDU dump ends. > > > 2005-12-21 19:43:22 [30798] [7] DEBUG: SMPP[smpp1]: Got PDU: > > > 2005-12-21 19:43:22 [30798] [7] DEBUG: SMPP PDU 0x81bb170 dump: > > > 2005-12-21 19:43:22 [30798] [7] DEBUG: type_name: enquire_link_resp > > > 2005-12-21 19:43:22 [30798] [7] DEBUG: command_id: 2147483669 = > > > 0x80000015 2005-12-21 19:43:22 [30798] [7] DEBUG: command_status: 0 = > > > 0x00000000 2005-12-21 19:43:22 [30798] [7] DEBUG: sequence_number: 1729 > > > = 0x000006c1 2005-12-21 19:43:22 [30798] [7] DEBUG: SMPP PDU dump ends. > > > > > > Enquire link n+1: > > > > > > 2005-12-21 19:44:22 [30798] [7] DEBUG: SMPP[smpp1]: Sending enquire link: > > > 2005-12-21 19:44:22 [30798] [7] DEBUG: SMPP PDU 0x81bb170 dump: > > > 2005-12-21 19:44:22 [30798] [7] DEBUG: type_name: enquire_link > > > 2005-12-21 19:44:22 [30798] [7] DEBUG: command_id: 21 = 0x00000015 > > > 2005-12-21 19:44:22 [30798] [7] DEBUG: command_status: 0 = 0x00000000 > > > 2005-12-21 19:44:22 [30798] [7] DEBUG: sequence_number: 1730 = > > > 0x000006c2 2005-12-21 19:44:22 [30798] [7] DEBUG: SMPP PDU dump ends. > > > 2005-12-21 19:44:23 [30798] [7] DEBUG: SMPP[smpp1]: Got PDU: > > > 2005-12-21 19:44:23 [30798] [7] DEBUG: SMPP PDU 0x81bb170 dump: > > > 2005-12-21 19:44:23 [30798] [7] DEBUG: type_name: enquire_link_resp > > > 2005-12-21 19:44:23 [30798] [7] DEBUG: command_id: 2147483669 = > > > 0x80000015 2005-12-21 19:44:23 [30798] [7] DEBUG: command_status: 0 = > > > 0x00000000 2005-12-21 19:44:23 [30798] [7] DEBUG: sequence_number: 1730 > > > = 0x000006c2 2005-12-21 19:44:23 [30798] [7] DEBUG: SMPP PDU dump ends. > > > > > > Enquire link n+2 (6 minutes later !!) > > > > > > 2005-12-21 19:50:35 [30798] [7] DEBUG: SMPP[smpp1]: Sending enquire link: > > > 2005-12-21 19:50:35 [30798] [7] DEBUG: SMPP PDU 0x81bb170 dump: > > > 2005-12-21 19:50:35 [30798] [7] DEBUG: type_name: enquire_link > > > 2005-12-21 19:50:35 [30798] [7] DEBUG: command_id: 21 = 0x00000015 > > > 2005-12-21 19:50:35 [30798] [7] DEBUG: command_status: 0 = 0x00000000 > > > 2005-12-21 19:50:35 [30798] [7] DEBUG: sequence_number: 1731 = > > > 0x000006c3 2005-12-21 19:50:35 [30798] [7] DEBUG: SMPP PDU dump ends. > > > 2005-12-21 19:50:35 [30798] [7] ERROR: SMPP[smpp1]: No responses from > > > SMSC within 300 sec. Reconnecting. > > > > > > Here, kannel reconnects and all goes fine again. > > > > > > > > > Regards and thanks for your help > > > > > > Alberto >
