Probably because MO/MT (mobile originated/mobile terminated) SMS takes place on the cellular "control" channel (somewhat like the "D" channel on a PRI span) and is not seen as "data" by the carrier. Sent from my BlackBerry® smartphone with Nextel Direct Connect -----Original Message----- From: "Frank Bulk - iName.com" <frnkblk@iname.com> Date: Wed, 19 May 2010 15:58:30 To: 'Adam Kennedy'<AdamKennedy@omnicity.net>; <nanog@nanog.org> Subject: RE: GSM modem test point with data and SMS support Thanks for your response and three I received off-list. Multi-tech confirmed that none of their models can do SMS and EDGE at the same time. They have to be out of PPP mode to send and receive SMS. Frank -----Original Message----- From: Adam Kennedy [mailto:AdamKennedy@omnicity.net] Sent: Wednesday, May 19, 2010 9:22 AM To: frnkblk@iname.com; nanog@nanog.org Subject: RE: GSM modem test point with data and SMS support Some additional information on the SAMBA modems can be found at the manufacturer site: http://www.falcomusa.com/ -- Adam Kennedy Network Engineer Omnicity, Inc. -----Original Message----- From: Adam Kennedy [mailto:AdamKennedy@omnicity.net] Sent: Wednesday, May 19, 2010 10:18 AM To: frnkblk@iname.com; nanog@nanog.org Subject: RE: GSM modem test point with data and SMS support The SAMBA modems are USB powered and can respond to normal AT commands for things like signal strength and so forth. Using the sms-tools kit, you can also send/receive SMS messages. The SAMBA modem I have supports EDGE. -- Adam Kennedy Network Engineer Omnicity, Inc. -----Original Message----- From: Frank Bulk [mailto:frnkblk@iname.com] Sent: Tuesday, May 18, 2010 11:00 PM To: nanog@nanog.org Subject: GSM modem test point with data and SMS support We have some interest in testing the real-world connectivity of several cellular towers using a GSM modem that has both a IP address on the WWAN and has SMS support. Is anyone aware of a self-contained box that supports both technologies? EDGE support is preferred, but GPRS would be acceptable. Frank