Audio Dropouts-Lagged Peer and Unavailable messages

I am having a lot of audio issues with my T23Gs lately. People report frequent audio dropouts.

Wondering if it has to do with these lagged peer messages I am seeing on the CLI.
What do these indicate?

[2016-03-23 16:07:39] NOTICE[27772]: chan_sip.c:29774 sip_poke_noanswer: Peer ‘5210’ is now UNREACHABLE! Last qualify: 3110
[2016-03-23 16:07:43] NOTICE[27772]: chan_sip.c:29774 sip_poke_noanswer: Peer ‘5331’ is now UNREACHABLE! Last qualify: 2052
[2016-03-23 16:07:45] NOTICE[27772]: chan_sip.c:29774 sip_poke_noanswer: Peer ‘5250’ is now UNREACHABLE! Last qualify: 1826
[2016-03-23 16:07:54] NOTICE[27772]: chan_sip.c:23767 handle_response_peerpoke: Peer ‘5331’ is now Reachable. (573ms / 2000ms)
[2016-03-23 16:08:01] NOTICE[27772]: chan_sip.c:23767 handle_response_peerpoke: Peer ‘5783’ is now Lagged. (2243ms / 2000ms)
[2016-03-23 16:08:02] NOTICE[27772]: chan_sip.c:23767 handle_response_peerpoke: Peer ‘5210’ is now Reachable. (7ms / 2000ms)

Typically, network problems. You are getting up to three second “ping” times on your SIP poke process.

I’ve seen this on overloaded gateways (your route to the Internet is clogged) and on servers where the system was responding to ridiculous numbers of SIP connection requests.