Transmission of messages.

After such connection has been made said long distance company shall transmit communications and messages to, from and through all local exchanges connected with its system when requested, with fidelity and equality and without discrimination or unreasonable delay. [C35, §8308-f3; C39, § 8308.3; C46, 50, 54, 58, 62, 66, 71, 73, 75, §488.12; C77, 79, 81, §477.12 ]