Hardware manual

5901 High Speed Dialup Modem Hardware Manual
October 19, 2007
44
Reporting Current or Selected Values
Command: +A8E?
Response: +A8E: a,b,c[,d][,e][,f]
Example: +A8E: 1,1,00,1,0,0 For the defaults
Reporting Supported Range of Parameter Values
Command: +A8E=?
Response: +A8E: (a range),(b range), (maximum size of c in octets), (d range)
Example: +A8E: (1,6),(1,5),(0,21,C1),(0,1)
10.4.2 +A8I:x,y - CI Signal Indication
This indication is issued by an answering modem, if +A8E,<v8a> 0, to indicate detection of a V.8
CI signal, and report the recovered Call Function octet(s).
Indication: +A8I: x,y
x A hexadecimal code octet representation of those Call Function octet(s). +A8I:0 indicates
that the modem timed out waiting for CI.
Example: +A8I:0 The modem timed out waiting for CI.
+A8I:X YYY
10.4.3 +DS = a,b,c,d - Data Compression
This extended-format compound parameter controls the V.42bis data compression function if
provided in the modem. It accepts four numeric subparameters:
Command: +DS=[a[,b[,c[,d]]]]
a Specifies the desired direction(s) of operation of the data compression function; from the
DTE point of view.
0 Negotiated; no compression (V.42bis P0=0).
3 Both directions, accept any direction (V.42bis P0=11). (Default.)
b Specifies whether or not the modem should continue to operate if the desired result is not
obtained.
0 Do not disconnect if V.42bis is not negotiated by the remote modem as specified in “a”.
c Specifies the maximum number of dictionary entries (2048 entries) which should be
negotiated (may be used by the DTE to limit the codeword size transmitted, based on its
knowledge of the nature of the data to be transmitted).
d Specifies the maximum string length (32 bytes) to be negotiated (V.42bis P2).
Reporting Current or Selected Values
Command: +DS?
Response: +DS: a,b,c,d
Example: +DS: 3,0,2048,32 for the defaults and 2048 entry max dictionary.
Reporting Supported Range of Parameter Values