return true if the current phone supports the ability to explicitly manage the state of a conference call i.e. view the participants , and hangup or separate individual callers . the in-call screen 's `` manage conference '' ui is available only on devices that support this feature . currently this is assumed to be true on gsm phones and false otherwise . todo : this capability should really be exposed by the telephony layer , since it depends on the underlying telephony technology . concode_field_sep String LOG_TAG concode_field_sep boolean supportsHoldAndUnhold concode_elem_sep boolean useShortDtmfTones concode_elem_sep boolean supportsAnswerAndHold concode_elem_sep boolean supportsNetworkSelection concode_elem_sep boolean supportsOtasp concode_elem_sep int getDeviceIdLabel concode_elem_sep boolean supportsEcm concode_elem_sep boolean supportsVoiceMessageCount
boolean function ( Phone arg0 ) { return ( ( arg0 . getPhoneType ( ) == Phone . PHONE_TYPE_GSM ) || ( arg0 . getPhoneType ( ) == Phone . PHONE_TYPE_SIP ) ) ; }