s120 Maximum data throughput??

[Saber]

I use s110 send notification to s120 in 1 - 1with 7.5ms connect interval,but the data maximum data throughput is only 21.3 /2 kbps.how can i do to raise the throughput??????? s110 softdevice 7.0. s120 softdevice 1.0. sdk 6.0.

[Petter Myhre]

The maximum throughput of the S120 v1 is 21.3 kbps with a connection interval of 7.5 ms. Are you saying you get 21.3 divided by 2 kbps? So 10.65 kbps? Do you have a connection interval of 15 ms?