Государственная эра 11D телефонный переключатель, meets the communication needs of industrial and mining units, hospitals and other scenarios

4 outer rays 16 split machines, 4 outer rays 24 splitters, 4 outer rays 32 venues, 4 outer rays 40 splitters, 4 outer rays 48 points, 8 outer rays and 16 points, 8 outer rays 24 splitters, 8 outer rays 32 points, 8 outer rays 40 spots, 8 outer rays 48 points