Description: This attribute indicates the current modem algorithm(s) active for the channel. Valid values are: v17, V.17 is active.V.17 is an ITU-T 14400bit/s modem standard. v27ter, V.27ter is active. V.27ter is an ITU-T 7200bit/s modem standard. v29, V.29 is active. V.29 an ITU-T 9600bit/s modem standard. v21, V.21 active. V.21 is an ITU-4 300bit/s modem standard. v22bis, V.22 or V.22bis active. V.22 ia an ITU-T modem standard that operates at 1200bit/s and 600 baud. V.22bis is an ITU-T modem standard that operates at 2400bit/s and 600 baud. v23, V.23 active. V.23 is an ITU-T modem standard that operates at a speed of 1200bit/s. v26ter, V.26ter active. V.26ter is an ITU-T modem standard that operates at a speed of 2400bit/s. v32bis, V.32 or V.32bis active. V.32 is an ITU-T modem standard that operates at 9600bit/s and 2400 baud. V.32bis is an ITU-T modem standard that operates at a speed of 14.4kbit/s. v34, V.34 active. V.34 is an ITU-T modem standard that operates at a speed of up to 28.8kbit/s.

Description of bits: notused0(0) v17(1) v29(2) v27ter(3) v21(4) v22bis(5) v23(6) v26ter(7) v32bis(8) v34(9)