# WISMO0228 - CSD Call
**URL:** https://forum.sierrawireless.com/t/wismo0228-csd-call/8026
**Category:** Legacy AirPrime modules
**Created:** [June 30, 2015, 3:58pm UTC](https://forum.sierrawireless.com/t/wismo0228-csd-call/8026 "2015-06-30T15:58:08Z")
**Posts on this page:** 12
**Page:** 1
### Author:  [@asif\_auh](https://forum.sierrawireless.com/u/asif_auh)
#### Post date: [June 30, 2015, 3:58pm UTC](https://forum.sierrawireless.com/t/wismo0228-csd-call/8026/1 "2015-06-30T15:58:08Z")
Hi
I have an issue in getting a CSD call working with WISMO0228 module.
Voice call ( ATDNNNNNNN; ) works without any issues.
When I try to make a CSD call ( ATDNNNNNNNN ) module responds with “NO CARRIER”
I have checked AT+CGCLASS. It was in “B”, I tried changing it to “CC”. Still it gives the same result.
The CSD call with the same SIM card with another modem works.
Appreciate any hints to sort this out…
Asif
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### Author:  [@awneil](https://forum.sierrawireless.com/u/awneil)
#### Post date: [June 30, 2015, 4:35pm UTC](https://forum.sierrawireless.com/t/wismo0228-csd-call/8026/2 "2015-06-30T16:35:28Z")
Did you try
> [@](#):
>
> ATDNNNNNNNN ;
❓
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### Author:  [@asif\_auh](https://forum.sierrawireless.com/u/asif_auh)
#### Post date: [July 1, 2015, 8:53am UTC](https://forum.sierrawireless.com/t/wismo0228-csd-call/8026/3 "2015-07-01T08:53:03Z")
It does not work.
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### Author:  [@awneil](https://forum.sierrawireless.com/u/awneil)
#### Post date: [July 1, 2015, 1:31pm UTC](https://forum.sierrawireless.com/t/wismo0228-csd-call/8026/4 "2015-07-01T13:31:25Z")
AT+CGCLASS sets the GPRS Mobile Station Class
Use AT+CBST to set the Bearer type for CSD
use AT+CEER to get the Clearing Cause immesiately after the call ends.
Post the exact command sequence you are using - and the responses.
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### Author:  [@asif\_auh](https://forum.sierrawireless.com/u/asif_auh)
#### Post date: [July 2, 2015, 7:32am UTC](https://forum.sierrawireless.com/t/wismo0228-csd-call/8026/5 "2015-07-02T07:32:46Z")
Hi Please find attached commands and response.
AT+CEER gives “Cause Select:67 Cause:57”
What could be the issue ?
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### Author:  [@asif\_auh](https://forum.sierrawireless.com/u/asif_auh)
#### Post date: [July 2, 2015, 10:24am UTC](https://forum.sierrawireless.com/t/wismo0228-csd-call/8026/6 "2015-07-02T10:24:21Z")
I tried with another SIM card.
AT+CEER gives “Cause Select:67 Cause:31”
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### Author:  [@asif\_auh](https://forum.sierrawireless.com/u/asif_auh)
#### Post date: [July 12, 2015, 6:18am UTC](https://forum.sierrawireless.com/t/wismo0228-csd-call/8026/7 "2015-07-12T06:18:53Z")
Guys,
Any help ?
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### Author:  [@awneil](https://forum.sierrawireless.com/u/awneil)
#### Post date: [July 12, 2015, 12:52pm UTC](https://forum.sierrawireless.com/t/wismo0228-csd-call/8026/8 "2015-07-12T12:52:57Z")
Have you tried looking up those codes?
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### Author:  [@asif\_auh](https://forum.sierrawireless.com/u/asif_auh)
#### Post date: [July 16, 2015, 1:37pm UTC](https://forum.sierrawireless.com/t/wismo0228-csd-call/8026/9 "2015-07-16T13:37:45Z")
Failure Cause from 3GPP TS 24.008 says the following
Cause :57 = Bearer capability not authorized
Cause :31 = Normal, unspecified
but no idea what it means !
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### Author:  [@awneil](https://forum.sierrawireless.com/u/awneil)
#### Post date: [July 16, 2015, 4:44pm UTC](https://forum.sierrawireless.com/t/wismo0228-csd-call/8026/10 "2015-07-16T16:44:28Z")
“Bearer capability not authorized” means that the type of call is not allowed - so you’re going to have to ask your service provider what type(s) of CSD calls are supported.
Are you sure that they support CSD at all - it is a dying service…
“Normal, unspecified” is just a standard call hangup.
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### Author:  [@asif\_auh](https://forum.sierrawireless.com/u/asif_auh)
#### Post date: [July 17, 2015, 11:13am UTC](https://forum.sierrawireless.com/t/wismo0228-csd-call/8026/11 "2015-07-17T11:13:36Z")
Hi,
I tried with another SIM, and it works.
Looks like I need to enable CSD from the service provider.
Is there any AT command which can list all the present settings from WISMO0228 ?
Thanks
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### Author:  [@awneil](https://forum.sierrawireless.com/u/awneil)
#### Post date: [July 18, 2015, 10:31am UTC](https://forum.sierrawireless.com/t/wismo0228-csd-call/8026/12 "2015-07-18T10:31:51Z")
> [@asif\_auh](#):
>
> Looks like I need to enable CSD from the service provider.
Or you need to correctly configure the modem for the service(s) provided
Again, look at the AT+CBST command…