Cisco 4507 power inline : IEEE PD issues

Found this problem more than 3 times. when we disconnect the cisco ip phone from 4507 switch, and then connect again, it cannot power on any more, when I connect to 4507 switch, "show power inline" command displayed the port is " Ieee PD" cannot displayed the IP Phone 7945... but when I move the cable to Cisco Catalyst 3750, show power inline command, it dispalyed as IP Phone 7945.

We have the same issue in three 4507 switch, no matter what I change the new cable or new IP phone. doesn't work... I don't if the switch 4507 port have some problem or how to reset the power inline to default. or you may have the same problem before when you deployed the cisco IP phone to your network replace PBX phones.

The answer:

Here are some 4507 info:

System image file is "bootflash:cat4500-ipbasek9-mz.122-53.SG1.bin"

cisco WS-C4507R-E (MPC8540) processor (revision 13) with 524288K bytes of memory.

Processor board ID

MPC8540 CPU at 800Mhz, Supervisor V-10GE

Last reset from PowerUp

5 Virtual Ethernet interfaces

248 Gigabit Ethernet interfaces

4 Ten Gigabit Ethernet interfaces

511K bytes of non-volatile configuration memory.

1    48  10/100/1000BaseT (RJ45)V, Cisco/IEEE   WS-X4548-RJ45V+   

2    48  10/100/1000BaseT (RJ45)V, Cisco/IEEE   WS-X4548-RJ45V+  

  3     6  Sup V-10GE 10GE (X2), 1000BaseX (SFP)  WS-X4516-10GE     

4     6  Sup V-10GE 10GE (X2), 1000BaseX (SFP)  WS-X4516-10GE     

5    48  10/100/1000BaseT (RJ45)V, Cisco/IEEE   WS-X4548-RJ45V+   

  6    48  10/100/1000BaseT (RJ45)V, Cisco/IEEE   WS-X4548-RJ45V+   

7    48  10/100/1000BaseT (RJ45)V, Cisco/IEEE   WS-X4548-RJ45V+  

                        Watts used of Chassis Inline Power (-50V)

                        Inline Power Admin  Inline Power Oper

Mod   Model                PS     Device       PS     Device     Efficiency

----  -------------------  ----------------    ----------------    ----------

1    WS-X4548-RJ45V+        222      208         74       69          94

2    WS-X4548-RJ45V+        166      156         63       59          94

3    WS-X4516-10GE            -        -          -        -           -

4    WS-X4516-10GE            -        -          -        -           -

5    WS-X4548-RJ45V+        447      420        148      139          94

6    WS-X4548-RJ45V+        396      372        130      122          94

7    WS-X4548-RJ45V+        396      372        131      124          94

-------------------------  ----------------    ----------------    ----------

       Total                1627     1528        546      513

The issue at Module 5, all this Module 5 cannot provide the PoE now...  G5/* cannot provide the POE.