User manual US ROBOTICS 56 K SOFTMODEM COMMAND REFERENCE REV 1

[. . . ] 56K Softmodem Command Reference R46. 2021. 00 rev 1 4/10 56K Softmodem Command Reference Contents Introduction . &Z<storage location>=<dialing sting>--Store Telephone Number . . 7 . 7 . 8 . 8 . 8 . 8 10 10 14 14 14 15 15 15 16 16 16 17 17 18 18 19 19 20 20 21 21 21 22 22 22 23 23 24 25 25 25 26 26 iii 56K Softmodem Command Reference \G<value>--Modem Port Flow Control . 32 +A8E=<v8o>, <v8a>, <v8cf>, <v8b>--V. 8 and V. 8 bis Operation Controls . [. . . ] The <break_selection> parameter sets the type of break sent to the remote DCE when a break is received from the local DTE. The <timed> parameter sets whether the V. 42 L-SIGNAL sends the break length. The <default_length> parameter sets the length of the break sent to the local DTE when the modem receives a break from the remote DTE that does not have a defined break length. The <default_length> is defined in milliseconds and has a default value of 30 (30 ms). Result codes: OK if <break_selection> = 0--3 and <timed> = 0, 1 and <default_length> = 0-- 255 in increments of 10. ERROR if <break_selection> does not equal 0--3 or <timed> does not equal 0, 1 or <default_length> does not equal 0--255 in increments of 10. Table 3-69: Valid <break_selection> Values Value 0 1 2 3 Meaning Ignore break (default). Expedited, destructive. Note:* ITU-T recommendation V. 250 (05/98) standardized this command. The standard version includes two additional parameters that are not included in the 56K Softmodem command set. For more infor- - 40 56K Softmodem Command Reference mation on the standardized version of this command, refer to ITU-T recommendation V. 250. Table 3-70: Valid <timed> Values Value 0 1 Meaning V. 42 L-SIGNAL does not indicate break signal length. V. 42 L-SIGNAL indicates break signal length. Table 3-71: Valid <default_length> Values Value 0 1--255 Modem does not deliver a break to the DTE. Modem delivers a break of the length set by the <default_length> parameter. Meaning Table 3-72: +EB Extended Syntax Commands Command +EB=<break selection>, <timed>, <default length> +EB?+EB=? Description Sets the modem behavior when a break is received. Displays the supported break selection settings. +EFRAM=<value 1>, <value 2>--Frame Length Use this command to set the maximum link-layer frame information field size that the 56K Softmodem attempts to establish. <value 1> defines the field size for the sending direction in octets. <value 2> defines the field size for the receiving direction in octets and is not required. Result codes: OK if <value 1> = 8, 16, 32, 64, 128, 256 and <value 2> = 0 ERROR if <value 1> does not equal 8, 16, 32, 64, 128, 256 or <value 2> does not equal 0 - 41 56K Softmodem Command Reference Table 3-73: +EFRAM Extended Syntax Commands Command +EFRAM=<value 1>, <value 2> +EFRAM?Displays the supported maximum frame sizes. +ER=<value>--Error Control Reporting Use this command to turn on or turn off the error control report. If the compression report is enabled, the +ER:<type> intermediate result code reports the current DCE-DCE error control type. It is issued after the determination of the error control protocol and before the final result code (e. g. , CONNECT). Specifically, the +ER intermediate result code is issued after the modulation report (+MCR and +MRR) and before the data compression report (+DR). Result codes: OK if <value> = 0, 1. ERROR if <value> does not equal 0, 1. - 42 56K Softmodem Command Reference Table 3-74: +ER Control Reporting Commands Command +ER=0 +ER=1 Function This command enables error control report (default). This command disables error control report. Table 3-75: +ER Error Control Reporting Intermediate Result Codes Result Code +ER: NONE +ER: LAPM +ER: ALT Description Data compression not in use. [. . . ] 33600 bits/s. S48--LAPM Error Control and Feature Negotiation This register is used in conjunction with register S36 to define LAPM error control and feature negotiation. If an invalid number is entered, the register accepts the value but S48 uses the 128 setting. Table 5-6: Register S48 Value S48 = 7 S48 = 128 S48 = 0 Enable negotiation (default). Bypass the detection and negotiation phases and then proceed with LAPM. Description The following table lists the S36 and S48 configuration settings necessary to negotiate certain types of connections. - 91 56K Softmodem Command Reference Table 5-7: Table 154. [. . . ]