H-channel
From DictionGloss
In Integrated Services Digital Networks (ISDN), a 384-kb/s, 1472-kb/s, or 1536-kb/s channel, designated as AH0, AH10, and AH11, respectively, accompanied by timing signals used to carry a wide variety of user information.
In Integrated Services Digital Networks (ISDN), a 384-kb/s, 1472-kb/s, or 1536-kb/s channel, designated as AH0, AH10, and AH11, respectively, accompanied by timing signals used to carry a wide variety of user information.