URL: http://www.bulksms.co.uk:5567/eapi/1.0/phonebook/public_remove_member
Example: http://www.bulksms.co.uk:5567/eapi/1.0/phonebook/public_remove_member?group_id=123456&msisdn=441234123456
This call allows you to make a group in your user phonebook available to the public. The call is only available if your phonebook has the option "Members can remove themselves" set.
You would typically make the URL specified above available as part of an HTML form, with the other parameters submitted as form parameters.
Note that if you want to use a success_url or fail_url, you have to specify both. By setting these to pages on your own site, you can provide a more attractive result to the user.