Loop IP6700 is used to transport TDM traffic over IP network. On the WAN side , the ethernet interface can be 10/ 100M electric or optical and the tributary side the TDM can be multiple E1/ T1/ V35 or single E3/ DS3. For transport TDM signals E1/ T1/ E3/ DS3, Jitter and Wander adheres to G.823 traffic and G.823 Synchronous