I'm using cisco ESW 540 24p for SIP hosted solution. Aastra phones +PC are hanging off a single port in ESW 540. The switch doesn't recognize the aastra phone and it places the phone in vlan1 whereas a cisco IP phone is automatically placed in vlan 100 by the switch through CDP. Does cisco ESW500 series support LLDP? other vendors support LLDP and that is how we instruct the switch that device connected is an IP phone, therefore it can place the phone in the appropriate VLAN. Letme know if it’s possible with ESW 540 or suggest us me of any workaround to implement this.