GM29 INTEGRATOR’S MANUAL

2.4.3 Voice Calls

The GM29 offers the capability of mobile originated and mobile terminated voice calls, as well as supporting emergency calls. Multi-party, call waiting and call deflection features are available. Some of these features are network-operator specific.

For the inter-connection of audio, the modem offers a balanced 4-wire analogue interface.

DTMF (Dual Tone Multi Frequency) is supported.

2.4.4 Data

The modem supports the following data protocols:

GPRS (General Packet Radio Service).

Modems are Class B terminals, which provide simultaneous activation and attachment of GPRS and GSM services. GM29 modems are GPRS class 8 (4+1) enabled devices, which are capable of transmitting in one timeslot per frame (up link), and receiving at a maximum of four timeslots per frame (down link).

CSD (Circuit Switched Data).

GM29 modems are capable of establishing a CSD communication at 9.6kbps.

HSCSD (High Speed Circuit Switched Data).

GM29 supports HSCSD class 2 (2+1) communication, with one timeslot per frame capacity in the up link and two timeslots per frame capacity in the down link.

2.4.5 Fax

The GM29 allows fax transmissions to be sent and received by commercial software installed on the application computer. Group 3 fax Classes 1 and 2 are supported.

2.4.6Supplementary Services

Call forwarding

Call hold, waiting and multiparty

Calling/called number identification

Advice of charge

USSD

Alternate line service

Customer service profile

Preferred networks

Operator selection

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Standard Horizon GM29 manual Ussd