ping a Cisco 7920 IP Phone

[myoey]

Hi all,
I have the following phenomena with a Cisco 7920 (Version
7920.4.0-03-01) when i ping this IP Phone:

replay from 192.168.100.76: Bytes=32 time=1337ms TTL=57
replay from 192.168.100.76: Bytes=32 time=21ms TTL=57
replay from 192.168.100.76: Bytes=32 time=992ms TTL=57
replay from 192.168.100.76: Bytes=32 time=41ms TTL=57
replay from 192.168.100.76: Bytes=32 time=3017ms TTL=57
replay from 192.168.100.76: Bytes=32 time=15ms TTL=57
replay from 192.168.100.76: Bytes=32 time=962ms TTL=57
replay from 192.168.100.76: Bytes=32 time=24ms TTL=57
replay from 192.168.100.76: Bytes=32 time=962ms TTL=57
replay from 192.168.100.76: Bytes=32 time=14ms TTL=57
replay from 192.168.100.76: Bytes=32 time=961ms TTL=57
replay from 192.168.100.76: Bytes=32 time=28ms TTL=57
replay from 192.168.100.76: Bytes=32 time=962ms TTL=57
replay from 192.168.100.76: Bytes=32 time=25ms TTL=57


as you see, the first icmp packet needs a long time and the second need short time and so forth...


Is it normal?
what can be the explanation for this phenomena?


Many thanks in advance!

 

[VinceWhirlwind]

Cool, get a few tracerts going and see if the path is always the same.

If there's any redundancy on the path to get to the phone, switch off bits of it at a time to see if you can find where the odd-looking delay is being introduced.