Information Technology Reference
In-Depth Information
be a function of the quality of the circuits, the client modem user base, and the set of modulations being
used. A typical CSR percentage for V.34 calls is 95 percent. V.90 calls can be expected to connect
successfully 92 percent of the time. Premature drops are likely to happen 10 percent of the time.
The tools used to gain an overall view of modem behavior on the access server are:
•
show modem
•
show modem summary
•
show modem connect-speeds
•
show modem call-stats
If troubleshooting an individual modem connection or gathering data for trend analysis, the following
information will be useful:
debug modem csm
modem call-record terse
show modem op (MICA) / AT@E1 (Microcom) while connected
show modem log - for the session of interest after disconnect.
ANI (caller's number)
Time of day
Client modem hardware / firmware revision
Interesting info from client (after disconnect)-ATI6, ATI11, AT&V, AT&V1, etc.
An audio record (.wav file) of the trainup attempt from the client modem
The commands will be explained further in the following sections, and some common trends will be
discussed.
show modem/show modem summary
The
show modem
command gives a view of individual modems. From these numbers, the health of
individual modems can be viewed.
router#
show modem
Codes:
* - Modem has an active call
C - Call in setup
T - Back-to-Back test in progress
R - Modem is being Reset
p - Download request is pending and modem cannot be used for taking calls
D - Download in progress
B - Modem is marked bad and cannot be used for taking calls
b - Modem is either busied out or shut-down
d - DSP software download is required for achieving K56flex connections
! - Upgrade request is pending
Inc calls Out calls Busied Failed No Succ
Mdm Usage Succ Fail Succ Fail Out Dial Answer Pct.
* 1/0 17% 74 3 0 0 0 0 0 96%
* 1/1 15% 80 4 0 0 0 1 1 95%
* 1/2 15% 82 0 0 0 0 0 0 100%
1/3 21% 62 1 0 0 0 0 0 98%
1/4 21% 49 5 0 0 0 0 0 90%
* 1/5 18% 65 3 0 0 0 0 0 95%
