All payment requests must be sent as an XML request using the HTTP POST method to the following URL:
https://secure.telr.com/gateway/mobile.xml>
All data must be sent in UTF-8 encoding. In order to allow processing via the global card network, only certain characters can be used. These are:
| Unicode set name | Characters allowed (hex code) |
|---|---|
| Basic Latin | 0009, 000A, 000D, 0020-007E |
| Latin-1 Supplement | 00A0-00FF |
| Latin Extended-A | 0100-017F |
| Latin Extended-B | 0180-024F |