Hi friend!
For details on how to connect voice terminals to an S series switch (except S1700 switches) that functions as a DHCP server, see the section 'Example for Configuring a DHCP Server on the Switch to Provide VoIP Access' in Typical IP Voice & IPTV & VOD Configuration:
http://support.huawei.com/enterp ... C22318564|6691579.
Hope to help you!