Motorola SYMBOL MINISCAN MSXX04 Guía de usuario descargar pdf (Pagina 238)

Chapter 19: Wireless Wide-Area Networking

Voice Over WWAN API Elements

Psion Mobile Devices Developers Guide

226

Last Event

The voice call is terminated—no more events will be generated for this call. See Section 19.13.8 Terminating

Voice Calls on page 223 for details.

Withheld Incoming Number

This is an incoming call where the caller withheld the phone number. See Section 19.13.12 Blocking Caller ID

on Outgoing Calls on page 224 for details.

19.13.14.2 Voice Call Manager Incoming Call Event

A voice call manager incoming call event is generated when a new voice call is received. Events are proc-

essed in the order that they are received. The application does not receive the next event until the handler

returns from the previous one. For this reason, it is recommended that there is a lightweight handler that

returns quickly.

19.13.15 Voice Over WWAN API Elements

C++: The phone book on all Psion computers is controlled using the VoiceCall class and the

VoiceCallManager class in the PsionTeklogix::WWAN namespace.

Java: Not available.

.NET: WWAN on all Psion computers is controlled using the VoiceCall class and the VoiceCallManager

class in the PsionTeklogix.WWAN namespace.

19.14 Phone Books

The Mobile Devices SDK allows an application to access and manipulate the phone books built into a SIM

card or WWAN modem.

Each phone book entry consists of one name and one phone number. The maximum number of bytes for a

name and for a phone number is determined by the network provider. The number of characters that can

be stored depends on the alphabet used for the entry. 16-bit alphabets allow fewer characters to be stored

in the available space than do 7-bit, and 8-bit alphabets. A name entry that is too long for the allocated

space is automatically truncated. The number can only contain the following characters: 0 (zero) to 9, *, #,

and +. Hyphens and brackets are automatically stripped from numbers before they are stored.

Reading Phone Book Entries

Use the following steps to read the entries from a phone book:

1. Get a list of all phone books—on both SIM cards and the modem—using GetPhonebooks.

2. Get the entries in a phone book using GetPhonebookEntries.

if (!InitWwanVoiceApi())

{

return false;

}

Phonebook[] phonebooks = Phonebook.GetPhonebooks();

foreach (Phonebook phonebook in phonebooks)

{

if (phonebook.StoredOnSim)

{

PhonebookEntry[] entries = phonebook.GetPhonebookEntries();

foreach (PhonebookEntry entry in entries)

{

// Some phonebook entries are duplicates, or

// they have zero length names. This example filters these out.

if (

(!number_combo.Items.Contains(entry.GetName())) &&

(entry.GetName().Length > 0)

)

{

number_combo.Items.Add(entry.GetName());

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