This page gives an overview to using our services for SMS.
This is where text messages are sent to us to deliver to our customers. We provide VoIP numbers in all UK area codes and some special services (e.g. 0800). However, at present, only a few of the numbers starting 01 and 02 can receive SMS messages properly from most networks. All of our 01, 02 and 03 numbers can receive SMS messages from Three properly. Attempts to send SMS messages to other geographic numbers (i.e. those starting 01 and 02) cause a call to be made and the SMS message read out by an automated system.
Where SMS messages can be received properly, and this includes all cases where A&A customers send SMS messages through us, the SMS message will be sent on to you by your choice of means. This is based on the incoming SMS message setting in the control pages for your number.
Our SIP2SIM service is also able to receive SMSs.
If you simply put in an email address, then the SMS message is emailed to you. Additional email headers may be present to specify fields such as User Data Header if present, etc. This is also the default if you do not fill in any incoming SMS handling information in the control pages, but you have an email address defined for the number.
If you include a 19 digit string starting 89 which is the SIM ICCID for one of your SIP2SIM cards then the text will be passed to the SIM directly as a normal SMS message. SIP2SIM charges apply for the SIP2SIM side as an incoming SMS message. See: SIP2SIM and SMS
If you put an entry starting http:// or https:// then we will attempt to send the SMS message to you using HTTP (or HTTPS). If the URL ends with a ? or & then an HTTP GET is done with a set of form fields (i.e. name=value) containing information about the SMS message. If the URL does not, then an HTTP POST is done using URL encoded form data. See: SMS API
Any of our VoIP Numbers can be used to send SMS messages. Just beware that not all numbers can receive an SMS message.
You can send in the following ways:
- Via our web form: http://aa.net.uk/telecoms-sendsms.html
- Via the SMS API
- Via a SIP2SIM SIM (in a suitable handset or device). See: SIP2SIM and SMS
Texts to SIP2SIM SIMs
Using our normal SMS message services, setting the destination number as the SIM ICCID (19 digit number starting 89) will send the SMS message to the SIM.
You can also use the outgoing SMS gateway using the SIM ICCID as the username and a password as set in the SIM config on the control pages. In this case you do not need to specify the 'da'.
Where possible multi-part SMS messages are automatically handled, concatenated before being passed to you, or split from your message into parts. Unfortunately, not all of the systems to which we interconnect handle multi-part messages sensibly, and this can result in a multi-part message being delivered as multiple separate messages.
Your bill will show the number of SMS messages sent and received per number. The optional XML version of your bill contains detailed information for each message sent or received, including the text content of the message (unless the private setting was used).
Multipart texts are itemised and billed as a single text but billed for the number of parts sent. The XML identifies the number of parts.
The originator field is used to set where the message is from. Normally this is only your phone number. Exceptions are:-
If you have a presentation number set up for your VoIP, this will be used unless you specify an originator. You can specify the presentation number, or the main number. If you ask us, we can allow sending of text-based originators on a per account basis. You will need to be an established customer. This can be withdrawn at any time.
UTF8 Character Sets
The SIP2SIM service does handle all of the GSM character set options, including the 7 bit character set with escaping, the 8 bit character set, and the 16 bit character set with UCS16 surrogates for full unicode.
Internally we convert all messages to UTF-8. If we are sending messages to your own gateway or email they will be in UTF-8.
Our outgoing SMS carriers to external mobiles do not support everything, sadly, and so some characters may get lost on the way. We can only suggest testing yourself to confirm.
Sending SMS messages to the SIP2SIM service can be done via our gateway/api and we accept UTF-8 which we will convert as needed into the necessary GSM character coding scheme and split for multi-part messages automatically.
SMS error codes
This is a list of internal error codes which may be shown on CDRs if something went wrong:
- -201 no target found for incoming SMS to customer
- -204 error while HTTP posting to customer's server
- -202 and -203 invalid destination email address
- -301 no destination number
- -302 and -303 no SMS content to deliver
- -304 this is a status report, not a normal SMS
- -305 message billing error - eg we won't send the message as we don't know who to bill
- -306 too many message parts
- -702 failed to route message - possible if sending to a totally invalid number
- -801 and -802 are decoding errors while packing to TPDUs
- -803 originator address not allowed