The Microline 5591 has been designed for use in the harshest of operating environments whilst offering the highest levels of flexibility and performance with unparalleled reliability.
Not quite found what you are looking for? You can find products which may be more suitable by simply checking the features that interest you and clicking the find button.
Some cookies are essential - we can't provide our services without them.
Other cookies can be turned off, although our website won't work as well without them.
Click OK to accept cookies and continue.
These cookies let us do things like remember your login details and settings and provide support using live chat.
We use these cookies to do things like show you content and promotions we think
you'll like while you're browsing BT Business Direct and other sites. They also let you share pages with social media sites.
You can change your cookies settings whenever you like by using the 'Cookie preferences' link at the bottom of every page on this website.
Here are your current cookie settings.