Please download our latest update of VoIP SIP SDK for iPhone:
Change log:
– Fixed issue with creating multiple TLS/TCP connections
– Added ability to set own headers in outgoing INVITE request via new method
(NSInteger)startCall:(NSString * _Nonnull)destination withVideo:(BOOL)video andSipCallId:(NSString * _Nullable)sipCallId andInviteHeaders:(NSString * _Nullable)headers
– Disabled using ‘RecordRoute’ when sending ACK.
– Added new setting ‘dontAccessCamera’
– UDP transport fixes