chatでconnectを試みた後に奇妙な文字列が出力される

chatでconnectを試みた後に奇妙な文字列が出力されたのですが、
このメッセージは何を示しているのでしょうか。

Sep 8 03:10:18 host pppd[2192]: Modem hangup
Sep 8 03:10:18 host pppd[2192]: Connect time 24554.4 minutes.
Sep 8 03:10:18 host pppd[2192]: Sent 20716686 bytes, received 3441087 bytes.
Sep 8 03:10:18 host pppd[2192]: Script /etc/ppp/ip-down started (pid 5649)
Sep 8 03:10:18 host pppd[2192]: Connection terminated.
Sep 8 03:10:18 host pppd[2192]: Script /etc/ppp/ip-down finished (pid 5649), status = 0x0
Sep 8 03:10:49 host chat[5797]: abort on (BUSY)
Sep 8 03:10:49 host chat[5797]: abort on (NO CARRIER)
Sep 8 03:10:49 host chat[5797]: abort on (VOICE)
Sep 8 03:10:49 host chat[5797]: abort on (NO DIALTONE)
Sep 8 03:10:49 host chat[5797]: abort on (NO DIAL TONE)
Sep 8 03:10:49 host chat[5797]: abort on (NO ANSWER)
Sep 8 03:10:49 host chat[5797]: abort on (DELAYED)
Sep 8 03:10:49 host chat[5797]: send (ATZ^M)
Sep 8 03:10:49 host chat[5797]: expect (OK)
Sep 8 03:10:49 host chat[5797]: ATZ^M^M
Sep 8 03:10:49 host chat[5797]: OK
Sep 8 03:10:49 host chat[5797]: -- got it
Sep 8 03:10:49 host chat[5797]: send (AT+CGDCONT=1,"PPP","****"^M)
Sep 8 03:10:50 host chat[5797]: expect (OK)
Sep 8 03:10:50 host chat[5797]: ^M
Sep 8 03:10:50 host chat[5797]: AT+CGDCONT=1,"PPP","****"^M^M
Sep 8 03:10:50 host chat[5797]: OK
Sep 8 03:10:50 host chat[5797]: -- got it
Sep 8 03:10:50 host chat[5797]: send (ATDT*99***1#^M)
Sep 8 03:10:50 host chat[5797]: expect (CONNECT)
Sep 8 03:10:50 host chat[5797]: ^M
Sep 8 03:11:35 host chat[5797]: alarm
Sep 8 03:11:35 host chat[5797]: Failed
Sep 8 03:11:35 host pppd[2192]: Script /usr/sbin/chat -v -f /etc/chatscripts/chat finished (pid 5796), status = 0x3
Sep 8 03:11:35 host pppd[2192]: Connect script failed
Sep 8 03:12:07 host chat[6405]: abort on (BUSY)
Sep 8 03:12:07 host chat[6405]: abort on (NO CARRIER)
Sep 8 03:12:07 host chat[6405]: abort on (VOICE)
Sep 8 03:12:07 host chat[6405]: abort on (NO DIALTONE)
Sep 8 03:12:07 host chat[6405]: abort on (NO DIAL TONE)
Sep 8 03:12:07 host chat[6405]: abort on (NO ANSWER)
Sep 8 03:12:07 host chat[6405]: abort on (DELAYED)
Sep 8 03:12:07 host chat[6405]: send (ATZ^M)
Sep 8 03:12:07 host chat[6405]: expect (OK)
Sep 8 03:12:07 host chat[6405]: ^M
Sep 8 03:12:07 host chat[6405]: CONNECT^M
Sep 8 03:12:07 host chat[6405]: ~^?}#@!}!}!} }.}(}"}'}"}"}&} } } } B-~~^?}#@!}!}!} }.}(}"}'}"}"}&} } } } B-~~^?}#@!
Sep 8 03:12:07 host chat[6405]: }!}!} }.}(}"}'}"}"}&} } } } B-~~^?}#@!}!}!} }.}(}"}'}"}"}&} } } } B-~~^?}#@!}!}!}
Sep 8 03:12:07 host chat[6405]: }.}(}"}'}"}"}&} } } } B-~~^?}#@!}!}!} }.}(}"}'}"}"}&} } } } B-~~^?}#@!}!}!} }.}(}"
Sep 8 03:12:07 host chat[6405]: }'}"}"}&} } } } B-~~^?}#@!}!}!} }.}(}"}'}"}"}&} } } } B-~~^?}#@!}!}!} }.}(}"}'}"}"
Sep 8 03:12:07 host chat[6405]: }&} } } } B-~^M
Sep 8 03:12:07 host chat[6405]: NO CARRIER
Sep 8 03:12:07 host chat[6405]: -- failed
Sep 8 03:12:07 host chat[6405]: Failed (NO CARRIER)