Voice Calls; Data - Wavecom GR64 GSM/GPRS Integrator's Manual

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The maximum length of a text mode SMS message is 160 characters using 7-bit
encoding. The Wireless CPU supports up to six concatenated messages to extend this
function. Concatenation is performed by the host application.
2.3.3

Voice Calls

The Wireless CPU offers the capability of MO (mobile originated) and MT (mobile
terminated) voice calls, as well as supporting emergency calls.
waiting and call divert features are available. Some of these features are network-
operator specific.
For the inter-connection of audio, the Wireless CPU offers both single ended and
balanced analogue input and output lines. Direct interface to the digital PCM (pulse
code modulation) bus used within the Wireless CPU is available, thus by-passing the
internal analogue circuitry.
vocoders.
2.3.4

Data

The Wireless CPU supports the following data protocols:
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GR64 Integrators Manual
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CBM (cell broadcast message); a service in which a message is sent to all
subscribers located in one or more specific cells in the GSM network (for
example, traffic reports)
SMS status report according to 3GPP TS 23.40
GPRS (General Packet Radio Service)
The Wireless CPU is a Class B terminal. The Wireless CPU is GPRS multi-slot
class10 (4+2) enabled, capable of receiving at a maximum of four timeslots
per frame (down link), and transmitting in two timeslots per frame (up link).
See section 2.3.5 for multi-slot allocation by class.
CSD (Circuit Switched Data)
The GR64 Wireless CPU is capable of establishing a CSD communication at 9.6
kbps over the air.
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The Wireless CPUs support HR, FR, EFR and AMR
Multi-party, call