Multi-Tech Systems ISIHP-2U - Manual (Page 132)

132 MultiModemISI Hybrid Series, ISIHP-2S/2U/4S/4U/4SD
Terminal Adapter AT Commands & S-Registers
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
non-ISDN) is sent with 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 non-ISDN
S18 3.1 kHz Audio, origination address is non-ISDN
S56 Calling Party Number IE Settings
(applies to NET3 [!C0=2] switch type only)
Unit: decimal ASCII code
Range: 128 Disable
Type of Number
0 Unknown,
16 International
32 National
48 Network specific
64 Subscriber
96 Abbreviated
Numbering Plan
0 Unknown
1 ISDN/telephony
3 Data
4 Telex
8 National standard
9 Private
Default: 128 (disabled)
Modifies the value of Octet 3 of the Calling Party Number Information
Element that is sent within the SETUP message for data and POTS port
(voice/modem/fax) calls. To set a specific number type and numbering
plan, select an option from the Type of Number section above and add its
value to the value of an option in the Numbering Plan section above. For
example, a National/ISDN Calling Party Number IE would be S56=33,
where 32 (National) + 1 (ISDN/telephony) = 33 (National/ISDN). If there
is no Data Directory Number (for data calls) nor Voice Directory Number
(for voice/modem/fax calls), no Calling Party Number IE is sent. By