[Freeswitch-users] how to manipulate sip headers in Freeswitch

hi, i am new to free switch and am trying to connect it to a call out system. But whenever i make the out call, the remote server says "too many Allow events" and the support representative says i need to remove the Allow-Events. does any one know how to manipulate or remove the "allow-event" part of the sip header ? My current allow events are Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, UPDATE, INFO, REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE Allow-Events: talk, hold, presence, dialog, line-seize, call-info, sla, include-session-description, presence.winfo, message-summary, refer and the server has problem with Allow-Events. they only want talk and hold. thanks. -sam