Chapter 4 - AT Commands,
| S53 | |
Function: | Maximum X.75 Buffer Size |
Unit: | 1 byte |
Range: | n=64 - 2048 |
Default: | 2048 (bytes) |
Description: S53 allows the maximum buffer size of an X.75 frame to be customized. | |
| Typically a smaller frame size is more compatible with software packages on |
| a PC (such as HyperTerminal). Larger frame sizes introduce larger delay |
| which some software cannot deal with appropriately. |
| S54 | |
Function: | Force 56 Kbps |
Unit: | Decimal ASCII code |
Range: | n=56 (Kbps) or 64 (Kbps) |
Default: | 64 (Kbps) |
Description: S54 can be used to force a 56 Kbps
| calls. |
| S55 | |
Function: | POTS Port Call Control |
Unit: | Decimal ASCII code |
Range: | 1, 2, 17, 18 |
Default: | 1 |
Description: Allows you to set the type of information transfer capability for calls placed from the
| POTS port either by a telephone, modem, or fax. Some Central Office (CO) switches | |
| keep track of the type of line each customer has, and if that line is labeled as a data line | |
| (modem or fax), it will not accept a speech call originated on that line. However, 3.1 kHz | |
| audio information transfer capability is allowed on data lines (modem or fax) by most | |
| switches. S55 also lets you define whether a progress indicator information element | |
| (which indicates that the origination address of the POTS call is | |
| the SETUP message for the POTS port call. This may help POTS port calls get through | |
| certain CO switches. | |
| S1 | Speech, no progress indicator |
| S2 | 3.1 kHz Audio, no progress indicator |
| S17 | Speech, origination address is |
| S18 | 3.1 kHz Audio, origination address is |
S56 (applies to NET3 [!C0=2] switch type only) | ||
Function: | Calling Party Number IE Settings | |
Unit: | decimal ASCII code | |
Range: | 128 | Disable |
| Type of Number | |
| 0 | Unknown, |
| 16 | International |
| 32 | National |
| 48 | Network specific |
| 64 | Subscriber |
| 96 | Abbreviated |
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