Re: GSM Modem "freezes"

Could easily be a bug in the Wavecom modem if it doesnt report anymore  
new messages.


On 20.02.2008, at 23:32, Hillel wrote:

> Hi,
>
> We are using the latest Kannel CVS with a Wavecom WMOD2, dual band  
> to receive SMSs for a client.
>
> After a few days the GSM modem seems to always “freeze” and does not  
> receive any more SMSs until we manually restart Kannel.
> This means we can’t provide a reliable service to our client that  
> requires SMSs to be received by a GSM Modem.
> What is interesting is even when the modem does not accept any more  
> SMSs, we still see in the bearerbox.log
>
> 2008-02-19 04:13:06 [12603] [15] DEBUG: AT2[gsmmodem1]: <-- AT 
> +CNMI=1,2,0,1,1
> 2008-02-19 04:13:06 [12603] [15] DEBUG: AT2[gsmmodem1]: <-- OK
>
> Is this a bug in the Kannel AT code?
> Any suggestions to prevent this happening and to improve our  
> configuration below are most appreciated.
>
> The following is the configuration used:
>
> gsmmodem1.conf:
> group = smsc
> smsc-id = gsmmodem
> allowed-smsc-id = gsmmodem
> smsc = at
> modemtype = wavecom
> validityperiod = 167
> my-number= +27xxxxxxxxx
> sms-center = +27831000113
> #sim-buffering = true
> keepalive= 120
> device = /dev/ttyS0
> speed = 9600
>
> modems.conf:
> group = modems
> id = wavecom
> name = "wavecom"
> detect-string = "WAVECOM"
> init-string = "AT+CNMI=1,2,0,1,1"
> reset-string = "AT+CNMI=1,2,0,1,1"
> speed = 9600
> need-sleep = true
> message-storage = "SM"
> sendline-sleep = 150
> keepalive-cmd = "AT+CNMI=1,2,0,1,1"
>
> group = sms-service
> accepted-smsc=gsmmodem
> keyword = default
> get-url = "http:// xxx:xxx@localhost/gsmmodem?from=%p&to=%P&message= 
> %a&timesent=%t&smsc=%i"
> omit-empty= true
> max-messages = 0