# Q2686 GPRS problem **URL:** \ **Category:** Legacy AirPrime modules\ **Created:** [January 14, 2011, 7:51am UTC](https://forum.sierrawireless.com/t/q2686-gprs-problem/4829 "2011-01-14T07:51:37Z")\ **Posts on this page:** 17\ **Page:** 1
**Author:** ![aezakmi](https://avatars.discourse-cdn.com/v4/letter/a/da6949/32.png) [@aezakmi](https://forum.sierrawireless.com/u/aezakmi)\ **Post date:** [January 14, 2011, 7:51am UTC](https://forum.sierrawireless.com/t/q2686-gprs-problem/4829/1 "2011-01-14T07:51:37Z")
Hai, Am using Q2686G. The firmware version is :: R74\_00gg.Q2686G Application OS :: 06.21 Boot loader version :: V08b0e When trying to connect to GPRS, getting the Cid Info is giving problem. what am doing is, 1. waiting for WIND: 7 event 2. Then doing GPRS setup [with Cid as ‘1’]and handler subscribe, both are returning OK 3. In handler, am receving i. Event::25[ADL\_GPRS\_EVENT\_SETUP\_OK] with Cid::1. Then am doing adl\_gprsAct(1).This also returning OK ii. then, receiving Event::27[ADL\_GPRS\_EVENT\_ME\_ATTACH] with Cid::1, in shell am getting 4. adl\_gprsGetCidInformations(Cid,info) giving error as , “ADL\_RET\_ERR\_PARAM -ERROR” Why the Cid is changed to 5[bcoz, they mentioned it is b/w 0-4 only] when the event “ADL\_GPRS\_EVENT\_ACTIVATE\_OK” ? Am i calling adl\_gprsGetCidInformations(Cid,info) in correct place? Please help me with is… Thank you… ---
**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\ **Post date:** [January 14, 2011, 9:28am UTC](https://forum.sierrawireless.com/t/q2686-gprs-problem/4829/2 "2011-01-14T09:28:27Z")
> [@aezakmi](#): > > 1. waiting for WIND: 7 event. Why do you think that is an appropriate event to wait for? Check the meaning of this event… ---
**Author:** ![aezakmi](https://avatars.discourse-cdn.com/v4/letter/a/da6949/32.png) [@aezakmi](https://forum.sierrawireless.com/u/aezakmi)\ **Post date:** [January 14, 2011, 9:52am UTC](https://forum.sierrawireless.com/t/q2686-gprs-problem/4829/3 "2011-01-14T09:52:53Z")
> [@awneil](#): > > > [@aezakmi](#): > > > > 1. waiting for WIND: 7 event. > > Why do you think that is an appropriate event to wait for? > Check the meaning of this event… In our forum, one of our friend told to wait for event “WIND : 4”[product is ready to process AT commands.] I did that. But i cant get anything different. Problem remain the same. “WIND :7” will come, when the n/w service is available for emergency call. I tried that. that time, i got some more lines in shell, " +WIND: 15,1,“Airtel”,2,“Airtel”,3,“+22”,4,“11/01/14,09:44:48+22”,6,“0” " Is it wrong? Why the Cid value changed to 5. Its limit is[0-4] only. Thank you awneil ---
**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\ **Post date:** [January 14, 2011, 10:59am UTC](https://forum.sierrawireless.com/t/q2686-gprs-problem/4829/4 "2011-01-14T10:59:41Z")
> [@aezakmi](#): > > In our forum, one of our friend told to wait for event “WIND : 4”[product is ready to process AT commands.] It’s ready to process AT commands - but it does not have any network service > [@](#): > > “WIND :7” will come, when the n/w service is available for emergency call. In this state, only an emergency call is allowed; no other network access is possible - that includes GPRS attach. Need to wait until unit is registered - either on the “home” network, or Roaming… ---
**Author:** ![aezakmi](https://avatars.discourse-cdn.com/v4/letter/a/da6949/32.png) [@aezakmi](https://forum.sierrawireless.com/u/aezakmi)\ **Post date:** [January 14, 2011, 1:15pm UTC](https://forum.sierrawireless.com/t/q2686-gprs-problem/4829/5 "2011-01-14T13:15:52Z")
> [@awneil](#): > > > [@aezakmi](#): > > > > In our forum, one of our friend told to wait for event “WIND : 4”[product is ready to process AT commands.] > > It’s ready to process AT commands - but it does not have any network service > > > [@](#): > > > > “WIND :7” will come, when the n/w service is available for emergency call. > > In this state, only an emergency call is allowed; no other network access is possible - that includes GPRS attach. > > Need to wait until unit is registered - either on the “home” network, or Roaming… Sir, Thank you for your replay. I waited for a long time. But after WIND: 7 , also some events related to SMS and calls are only coming. I checked in user guide. Can not find any API to check or to do registration . Kindly help me . ---
**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\ **Post date:** [January 14, 2011, 1:33pm UTC](https://forum.sierrawireless.com/t/q2686-gprs-problem/4829/6 "2011-01-14T13:33:11Z")
> [@aezakmi](#): > > Can not find any API to check or to do registration. There isn’t one. 😠 See: [New Features - Complete API - #15 by awneil](https://forum.sierrawireless.com/t/new-features-complete-api/3305/15) So you’ll have to make do with AT Commands - just as you did with the +WIND: unsolicited responses… ---
**Author:** ![aezakmi](https://avatars.discourse-cdn.com/v4/letter/a/da6949/32.png) [@aezakmi](https://forum.sierrawireless.com/u/aezakmi)\ **Post date:** [January 17, 2011, 8:46am UTC](https://forum.sierrawireless.com/t/q2686-gprs-problem/4829/7 "2011-01-17T08:46:23Z")
> [@awneil](#): > > > [@aezakmi](#): > > > > Can not find any API to check or to do registration. > > There isn’t one. 😠 > See: [New Features - Complete API - #15 by awneil](https://forum.sierrawireless.com/t/new-features-complete-api/3305/15) > > So you’ll have to make do with AT Commands - just as you did with the +WIND: unsolicited responses… Thank you awneil. Now, I installed GPRS hadler after the unit is ready to process the AT commands. Then, after the GPRS handler received, the “ADL\_GPRS\_EVENT\_ME\_ATTACH”, am calling the GPRS setup function. Now, the Cid is not changing and am getting the DNS1,local ip . But, when i call “wip\_TCPClientCreate” with one IP and port number[In which am already running server], the create is returning OK . But when i try to transmit some data using GPRS using “wip\_write” it is giving error as, " WIP\_CEV\_ERROR" and error number is “-989”. Saying Destination Host is Un-reachable. But that host is up and waiting in that socket. Is there any way to confirm the GPRS functionality ? Thank you, ---
**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\ **Post date:** [January 17, 2011, 8:54am UTC](https://forum.sierrawireless.com/t/q2686-gprs-problem/4829/8 "2011-01-17T08:54:33Z")
> [@aezakmi](#): > > after the GPRS handler received, the “ADL\_GPRS\_EVENT\_ME\_ATTACH” Note that the unit does not necessarily automatically GPRS-Attach. You are lucky that yours just happens to - but that might stop if you change settings and/or change provider, etc. I think it is safer to wait for GSM Registration (GSM Attach). > [@](#): > > Saying Destination Host is Un-reachable. But that host is up and waiting in that socket. But is it reachable? ie, is it a “Public” IP address that the module can “see”? ---
**Author:** ![aezakmi](https://avatars.discourse-cdn.com/v4/letter/a/da6949/32.png) [@aezakmi](https://forum.sierrawireless.com/u/aezakmi)\ **Post date:** [January 17, 2011, 9:55am UTC](https://forum.sierrawireless.com/t/q2686-gprs-problem/4829/9 "2011-01-17T09:55:20Z")
> [@awneil](#): > > > [@aezakmi](#): > > > > after the GPRS handler received, the “ADL\_GPRS\_EVENT\_ME\_ATTACH” > > Note that the unit does not necessarily automatically GPRS-Attach. > > You are lucky that yours just happens to - but that might stop if you change settings and/or change provider, etc. > > I think it is safer to wait for GSM Registration (GSM Attach). > > > [@](#): > > > > Saying Destination Host is Un-reachable. But that host is up and waiting in that socket. > > But is it reachable? > > ie, is it a “Public” IP address that the module can “see”? ok sir. I will change the code to wait for GSM attach. And regarding the client socket, the server is up and it is public IP. I can connect to that sever using another system, using the same SIM card. I called “wip\_netInit” at the beginning itself.I am creating the client socket after i get the “ADL\_GPRS\_EVENT\_ACTIVATE\_OK”. " if( (client = wip\_TCPClientCreate( servIpAddr,port,(wip\_eventHandler\_f)&Handler2, NULL ))==NULL) adl\_atSendResponse ( ADL\_AT\_UNS,“\n ERROR:wip\_TCPClientCreate\n”); else { adl\_atSendResponse ( ADL\_AT\_UNS,“\n OK:: wip\_TCPClientCreate\n”); nwrite=wip\_write(client, “HAI”, strlen(“HAI”); ``` } " ``` But, in handler am receiving “WIP\_CEV\_ERROR” with error number:: -989 Thank you, ---
**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\ **Post date:** [January 17, 2011, 10:41am UTC](https://forum.sierrawireless.com/t/q2686-gprs-problem/4829/10 "2011-01-17T10:41:47Z")
> [@aezakmi](#): > > I called “wip\_netInit” at the beginning itself.I am creating the client socket after i get the “ADL\_GPRS\_EVENT\_ACTIVATE\_OK” If you’re using WIP, then you should use the WIP events - in this case, WIP\_BEV\_IP\_CONNECTED. ---
**Author:** ![aezakmi](https://avatars.discourse-cdn.com/v4/letter/a/da6949/32.png) [@aezakmi](https://forum.sierrawireless.com/u/aezakmi)\ **Post date:** [January 18, 2011, 7:07am UTC](https://forum.sierrawireless.com/t/q2686-gprs-problem/4829/11 "2011-01-18T07:07:08Z")
> [@awneil](#): > > > [@aezakmi](#): > > > > I called “wip\_netInit” at the beginning itself.I am creating the client socket after i get the “ADL\_GPRS\_EVENT\_ACTIVATE\_OK” > > If you’re using WIP, then you should use the WIP events - in this case, WIP\_BEV\_IP\_CONNECTED. thank you awneil. With out using GPRS event handler, now i tried. I called “wip\_netInit” at the beginning. Then waiting for event 15 to occur. [till the CPU receive NITZ info from network]. I get, " +WIND: 15,1,“Airtel”,2,“Airtel”,3,“+22”,4,“11/01/18,07:01:14+22”,6,“0” " after that i called gprs bearer function which will do, wip\_bearerOpen, wip\_bearerSetOpts, and wip\_bearerStart . but wip\_bearerStart get failed with following error, wip\_bearerStart failed:-27 -ERROR WIP\_BERR\_OK\_INPROGRESS . it is saying “Connection started, an event will be sent after completion” . But am not at all getting the “WIP\_BEV\_IP\_CONNECTED” Thank you very much, ---
**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\ **Post date:** [January 18, 2011, 7:45am UTC](https://forum.sierrawireless.com/t/q2686-gprs-problem/4829/12 "2011-01-18T07:45:44Z")
> [@aezakmi](#): > > Then waiting for event 15 to occur. [till the CPU receive NITZ info from network]. I get, > " +WIND: 15,1,“Airtel”,2,“Airtel”,3,“+22”,4,“11/01/18,07:01:14+22”,6,“0” " Not a good idea, I’m afraid. Not all networks give NITZ at all, and some that do only give it after GPRS attach. So it’s no better than waiting for GPRS-Attach - but possibly worse! As I said to you before: > [@I](#): > > I think it is safer to wait for GSM Registration (GSM Attach). > [@aezakmi](#): > > but wip\_bearerStart get failed with following error, > wip\_bearerStart failed:-27 -ERROR WIP\_BERR\_OK\_INPROGRESS No, that is not a failure at all - that is perfectly normal behaviour! See: [Documentation Unhelpful/Misleading: WIP\_BERR\_OK\_INPROGRESS - #3 by medhat](https://forum.sierrawireless.com/t/documentation-unhelpful-misleading-wip-berr-ok-inprogress/3706/3) > [@aezakmi](#): > > But am not at all getting the “WIP\_BEV\_IP\_CONNECTED” If you don’t get WIP\_BEV\_IP\_CONNECTED, you should get WIP\_BEV\_CONN\_FAILED ---
**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\ **Post date:** [January 18, 2011, 8:28am UTC](https://forum.sierrawireless.com/t/q2686-gprs-problem/4829/13 "2011-01-18T08:28:47Z")
See also: [https://forum.sierrawireless.com/t/wip-initializing-a-gprs-bearer-example-is-wrong/4836/1](https://forum.sierrawireless.com/t/wip-initializing-a-gprs-bearer-example-is-wrong/4836/1) ---
**Author:** ![aezakmi](https://avatars.discourse-cdn.com/v4/letter/a/da6949/32.png) [@aezakmi](https://forum.sierrawireless.com/u/aezakmi)\ **Post date:** [January 18, 2011, 12:00pm UTC](https://forum.sierrawireless.com/t/q2686-gprs-problem/4829/14 "2011-01-18T12:00:38Z")
> [@awneil](#): > > > [@aezakmi](#): > > > > Then waiting for event 15 to occur. [till the CPU receive NITZ info from network]. I get, > > " +WIND: 15,1,“Airtel”,2,“Airtel”,3,“+22”,4,“11/01/18,07:01:14+22”,6,“0” " > > Not a good idea, I’m afraid. > > Not all networks give NITZ at all, and some that do only give it after GPRS attach. > So it’s no better than waiting for GPRS-Attach - but possibly worse! > > As I said to you before: > > > [@I](#): > > > > I think it is safer to wait for GSM Registration (GSM Attach). > > > [@aezakmi](#): > > > > but wip\_bearerStart get failed with following error, > > wip\_bearerStart failed:-27 -ERROR WIP\_BERR\_OK\_INPROGRESS > > No, that is not a failure at all - that is perfectly normal behaviour! > See: [Documentation Unhelpful/Misleading: WIP\_BERR\_OK\_INPROGRESS - #3 by medhat](https://forum.sierrawireless.com/t/documentation-unhelpful-misleading-wip-berr-ok-inprogress/3706/3) > > > [@aezakmi](#): > > > > But am not at all getting the “WIP\_BEV\_IP\_CONNECTED” > > If you don’t get WIP\_BEV\_IP\_CONNECTED, you should get WIP\_BEV\_CONN\_FAILED thank you awneil… now i am trying with new sim card. As you warned me,this is not returning NITZ. Thank you. so, i am sending “AT+CREG=1” command using adl\_atCmdCreate API. After this API’s success, i am calling gprs setup function. Now am getting WIP\_BERR\_OK\_INPROGRESS and after some time WIP\_BEV\_CONN\_FAILED. Am getting WIP\_BOPT\_ERROR value as 4. " WIP\_BOPT\_ERROR::4 " . But its not negative, and this error code is not listed in document. Thank you very much … ---
**Author:** ![aezakmi](https://avatars.discourse-cdn.com/v4/letter/a/da6949/32.png) [@aezakmi](https://forum.sierrawireless.com/u/aezakmi)\ **Post date:** [January 18, 2011, 1:11pm UTC](https://forum.sierrawireless.com/t/q2686-gprs-problem/4829/15 "2011-01-18T13:11:59Z")
> [@awneil](#): > > See also: [WIP "Initializing a GPRS Bearer" example is WRONG!](https://forum.sierrawireless.com/t/wip-initializing-a-gprs-bearer-example-is-wrong/4836/1) how can i know the local ip assigned to the unit after connecting to GPRS when using “WIP” . Is there any thing like getCidInfo API. Thank you, ---
**Author:** ![josepvr](https://avatars.discourse-cdn.com/v4/letter/j/d78d45/32.png) [@josepvr](https://forum.sierrawireless.com/u/josepvr)\ **Post date:** [January 18, 2011, 1:53pm UTC](https://forum.sierrawireless.com/t/q2686-gprs-problem/4829/16 "2011-01-18T13:53:09Z")
> [@aezakmi](#): > > how can i know the local ip assigned to the unit after connecting to GPRS when using “WIP” . Is there any thing like getCidInfo API. > Thank you, ```auto s8 err; ascii IpAddr[15]; wip_in_addr_t appIpAddr; err = wip_bearerGetOpts(bearer,WIP_BOPT_IP_ADDR,&appIpAddr,WIP_BOPT_END); wip_inet_ntoa(appIpAddr, IpAddr,15); ``` ---
**Author:** ![aezakmi](https://avatars.discourse-cdn.com/v4/letter/a/da6949/32.png) [@aezakmi](https://forum.sierrawireless.com/u/aezakmi)\ **Post date:** [January 19, 2011, 3:38am UTC](https://forum.sierrawireless.com/t/q2686-gprs-problem/4829/17 "2011-01-19T03:38:07Z")
> [@josepvr](#): > > > [@aezakmi](#): > > > > how can i know the local ip assigned to the unit after connecting to GPRS when using “WIP” . Is there any thing like getCidInfo API. > > Thank you, > > ```auto > s8 err; > ascii IpAddr[15]; > wip_in_addr_t appIpAddr; > err = wip_bearerGetOpts(bearer,WIP_BOPT_IP_ADDR,&appIpAddr,WIP_BOPT_END); > wip_inet_ntoa(appIpAddr, IpAddr,15); > ``` got it. thank you josep