You are implementing a Cisco Unified Communications Manager solution utilizing MGCP gateways with PRI interface cards. You are working with your security department, which has a firewall in place…

You are implementing a Cisco Unified Communications Manager solution utilizing MGCP gateways with PRI interface cards. You are working with your security department, which has a firewall in place between Cisco Unified Communications Manager and the gateway. After the firewall is turned up, your PRI is no longer working. You suspect that the backhaul port has been blocked. What port does Cisco Unified Communications Manager use between itself and an MGCP gateway for PRI backhaul traffic?