This CL = skinnier handset.
I do not recommend buying this though; the 6900 series were first introduced in 2009 and are not current gen-hardware. The only reason the 6901 existed was because Cisco wanted hotels to put them in bathrooms instead of an analog phone at the time. If you’re going to buy a phone look at the 7800 and 8800 series. The 6800 series is also an option but is only compatible with MPP firmware. If you’re not familiar: there are two different firmware loadsl, each with their own SKUs. Enterprise, the original SKUs, supports CUCM and CME while MPP, the -3PCC SKUs, supports Webex Calling and non-Cisco call control. You cannot flip back and forth between them without buying a migration license (different patent royalties) so pay attention to which you’re getting.
