The grantee shall not transmit any audio or video signal, including polling channel selections, from any subscriber’s premises without first obtaining the written consent of that subscriber. (This provision is not intended to prohibit the use of transmission signals useful only for the control or measurement of signal performance and programming, e.g., status monitoring or reception of premium service, but such information shall not be used except for those basic purposes.) The grantee shall not install any special terminal equipment in any subscriber’s premises which will permit transmission from subscriber’s premises of two-way services utilizing audio or video signals on the cable system without first obtaining written permission from the subscriber.