Crosspoint and Common Control Exchanges

16mm film unknown Sound Unknown 0:00

From: an image from the collection
BT Archives

Video not currently available. Get in touch to discuss viewing this film

Summary: Crosspoint and Common Control Exchanges

Contact
Share
Add information
Full record
From: an image from the collection
BT Archives
Contact
Share
Add information

Comments

Add your own comment

Related

loading…

 

 

 

Top
feedback