Send SMS using the appropriate phone

We have 4 GSM networks (GSM1, GSM2, GSM3, GSM4). We have 4 GSM Phones connected to a computer via USB one for each GSM provider (TEL1, TEL2, TEL3, TEL4). Each phone can send a certain number of SMS to a specified network (CRD1, CRD2, CRD3, CRD4) The sending process will use all 4 Phones simultaneously. The sending process to a certain network will stop after successfully sending the CRD# of SMS (credit reach its limit) We have a database with the following fields: phone#, network, message I am looking for a software that can do the following: - parse the database and send the message to the phone# using the appropriate phone. - mark the sending "status" for each database item (at least these: sent, pending, error) - the sending capacity has to be limited to the GSM network only. - the phones will not accept any incoming calls (block or divert to another phone#) contact me for details.