Problems Sending with Cingular / AT&T Sierra MC8875 USB HSDPA Modem...

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Chris Mercier
New member
Username: Mercier

Post Number: 1
Registered: 08-2007
Posted on Thursday, August 23, 2007 - 11:08 pm:   

I am trying to use the product (2007) with a USB Sierra Wireless MC8775 access card (Cingular service, Louisiana, US). I can send and receive SMS using the AT&T connection manager software that comes with the card. Please see logs below.

Thanks

2007-08-23 18:12:35,46CE1453.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:12:54,46CE1453.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:13:12,46CE1454.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:13:31,46CE1454.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:13:50,46CE1453.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:14:17,46CE1454.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:15:06,46CE1453.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:15:33,46CE1454.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:16:52,46CE1453.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:17:19,46CE1454.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:19:08,46CE1453.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:19:35,46CE1454.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:21:54,46CE1453.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:22:21,46CE1454.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:25:10,46CE1453.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:25:37,46CE1454.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:28:56,46CE1453.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:29:23,46CE1454.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:33:12,46CE1453.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:33:39,46CE1454.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:36:52,46CE1455.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:37:11,46CE1455.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:37:44,46CE1455.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:38:16,46CE1453.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:38:34,46CE1454.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:38:52,46CE1456.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:39:11,46CE1455.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:39:29,46CE1456.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:40:16,46CE1456.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:40:57,46CE1455.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:41:16,46CE1457.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:41:35,46CE1456.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:41:53,46CE1457.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:42:39,46CE1457.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:43:13,46CE1455.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:43:31,46CE1456.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:43:50,46CE1453.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:44:08,46CE1454.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:44:26,46CE1457.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:45:47,46CE1456.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:46:06,46CE1455.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:46:24,46CE1457.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:48:09,46CE1458.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:48:28,46CE1458.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:48:46,46CE1459.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:49:05,46CE1456.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:49:20,46CE1457.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:49:52,46CE1453.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:50:10,46CE1454.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:50:28,46CE1455.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:50:46,46CE1458.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:51:04,46CE1459.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:51:50,46CE1459.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:52:09,46CE1457.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:52:27,46CE1458.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:52:46,46CE1456.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:53:04,46CE145A.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:53:23,46CE1459.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:53:41,46CE145A.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:54:13,46CE1458.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:54:31,46CE145A.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:54:50,46CE1455.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:55:09,46CE1459.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:55:28,46CE1457.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:55:47,46CE145A.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:56:08,46CE1453.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:56:26,46CE1454.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:56:44,46CE1456.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:57:02,46CE1458.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:57:25,46CE1459.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
2007-08-23 18:57:43,46CE145A.req,127.0.0.1,2258022033,Retry Pending - ERROR - Modem Response (1): OK -- Sierra Wireless MC8775 HSDPA Modem
Bryce Norwood - NowSMS Support
Board Administrator
Username: Bryce

Post Number: 7446
Registered: 10-2002
Posted on Monday, September 10, 2007 - 08:36 pm:   

Hi Chris,

In my experience with other Sierra Wireless devices, the software that comes with the device does not use an AT command interface for sending/receiving SMS, but instead uses a protocol that is proprietary to Sierra Wireless.

Those errors are very bizarre ... NowSMS is sending an AT command to send a message ... AT+CMGS=## (where ## refers to the length of the PDU for the message to be sent).

The modem is supposed to response with a continuation response (">" character) to indicate that it is ready to accept the message.

Instead, the modem is responding "OK", as if the command was complete!

Try editing SMSGW.INI, and under the section header for the modem, add ModemTextMode=Yes ... this setting will configure NowSMS to use the text interface for sending SMS messages instead of the binary PDU interface.

I'm just wondering if that makes a difference.

From the sound of things, Sierra Wireless may have some problems with their AT command implementation in their new USB modem. To troubleshoot further, let's try text mode first.

-bn
Xi Zhang
New member
Username: Verizonlab

Post Number: 2
Registered: 08-2007
Posted on Thursday, October 11, 2007 - 06:06 pm:   

Hi, BN,

I tried but did not work. I have the exact same problem as Chris. I am using the same Sierra AirCard 875U.

Could you provide any additional suggestion and help on this? Thanks a lot.

-Xi.
Malcolm - Now Support
Moderator
Username: Malcolm

Post Number: 194
Registered: 12-2006
Posted on Thursday, October 18, 2007 - 06:59 pm:   

Hi,

Sorry for the delay in response.

After editing SMSGW.INI to add ModemTextMode=Yes under the section header for the modem ... could you enable the SMSDEBUG.LOG in NowSMS (checkbox on the "Serial #" page).

Try sending a message, and post the details from the SMSDEBUG.LOG.

The documentation for this modem suggests that the modem should support the SMS related AT commands properly. But it is clear that people are definitely having problems.

Let me ask you another question ... with the PC card versions of the modem, the Sierra Wireless software installs 2 modem interfaces in Windows. One of the modem interfaces supports SMS while the other does not. Is it possible that the USB version of the software also installs 2 modems?

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