Polycom SIP 3.0.2 User manual

April, 2008 Edition
1725-17693-300 Rev. A
SIP 3.0.2
Web Application Developer’s Guide
for the SoundPoint®
IP/SoundStation®IP Family
SIP 3.0.2

Polycom Inc.
4750 Willow Road
Pleasanton, CA 94588-2708
USA
No part of this document may be reproduced or transmitted in any form or by any means, electronic or mechanical, for
any purpose, without the express written permission of Polycom, Inc. Under the law, reproducing includes translating
into another language or format.
As between the parties, Polycom, Inc. retains title to, and ownership of, all proprietary rights with respect to the software
contained within its products. The software is protected by United States copyright laws and international treaty
provision. Therefore, you must treat the software like any other copyrighted material (e.g. a book or sound recording).
Every effort has been made to ensure that the information in this manual is accurate. Polycom, Inc. is not responsible
for printing or clerical errors. Information in this document is subject to change without notice.
Trademark Information
Polycom®, the Polycom logo design, SoundPoint® IP, SoundStation®, SoundStation VTX 1000®, ViaVideo®,
ViewStation®, and Vortex® are registered trademarks of Polycom, Inc. Conference Composer™, Global Management
System™, ImageShare™, Instructor RP™, iPower™, MGC™, PathNavigator™, People+Content™, PowerCam™,
Pro-Motion™,QSX™,ReadiManager™,Siren™,StereoSurround™,V2IU™, VisualConcert™,VS4000™,VSX™,and
the industrial design of SoundStation are trademarks of Polycom, Inc. in the United States and various other countries.
All other trademarks are the property of their respective owners.
Patent Information
The accompanying product is protected by one or more U.S. and foreign patents and/or pending patent applications
held by Polycom, Inc.
© 2008 Polycom, Inc. All rights reserved.

iii
About This Guide
The Developer’s Guide for the SoundPoint IP / SoundStation IP family is for
developers of applications which use the Microbrowser on SoundPoint IP /
SoundStation IP phones.
The following related documents for SoundPoint IP / SoundStation IP family
are available:
•Quick Start Guides, which describe how to assemble the phones
•Quick User Guides, which describe the most basic features available on
the phones
•User Guides, which describe the basic and advanced features available on
the phones
•Administrator’s Guide, which describes how to configure, customize,
manage, and troubleshoot SoundPoint IP / SoundStation IP phone
systems
•Technical Bulletins, which describe workarounds to existing issues
•Release Notes, which describe the new and changed features and fixed
problems in the latest version of the software
For support or service, please go to Polycom Technical Support at
http://www.polycom.com/support/voip/.
Polycom recommends that you record the phone model numbers, software
(both the bootROM and SIP), and partner platform for future reference.
SoundPoint IP / SoundStation IP models: ___________________________
BootROM version: ________________________________________________
SIP Application version: ___________________________________________
Partner Platform: _________________________________________________

Developer’s Guide SoundPoint IP / SoundStation IP
iv

v
Contents
About This Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii
1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–1
What is the Microbrowser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–1
What is XHTML . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2
How to Create Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–3
2 Application Development . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1
Supported XHTML Elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1
Basic Tags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–2
Link Tags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–3
Input Tags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–3
Image Tags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–6
Table Tags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–7
Meta Information Tags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–9
HTTP Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–9
Microbrowser User Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–10
Launching the Microbrowser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–11
Navigation and Form Editing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–11
Idle Display Microbrowser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–12
Developing an XHTML Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–12
Changing Configuration Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . 2–12
Sample Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–13
3 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–1
XML Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–1
A Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A–1
Unsupported XHTML Elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A–1
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Index–1

Developer’s Guide SoundPoint IP / SoundStation IP
vi

1 - 1
1
Overview
This chapter provides an overview of the Microbrowser available on
SoundPoint IP 330/320, 430, 501, 550, 560, 600, 601, 650, and 670 desktop
phones and SoundStation IP 4000, 6000, and 7000 conference phones.
It also provides an introduction to XHTML and guidelines for the application
development.
This chapter contains information on:
•What is the Microbrowser
•What is XHTML
•How to Create Applications
To develop an application that can run on the Microbrowser, refer to
Application Development on page 2-1. To troubleshoot any problems with
your applications, refer to Troubleshooting on page 3-1.
What is the Microbrowser
The Microbrowser is like any Web browser—Microsoft Internet Explorer and
Firefox, for example—but supports only a subset of XHTML features. It can
connect to Web servers hosted in the Internet or intranet and download
XHTML pages. The Microbrowser supports a limited number of XHTML 1.0
features—it does not have full Web browser functionality.
The Microbrowser downloads XHTML content from a Web server into the
phone’s memory, then parses the content to identify XHTML tags and renders
these tags onto the phone’s graphic display. The appearance of the rendered
page depends on the graphical capabilities and display size of the device on
which the browser is running. Complicated pages should be avoided on
devices with very small displays.
The Microbrowser does not support scripting (such as JavaScript). All actions
on data entered into forms is processed by the server using POST or GET
methods.

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1 - 2
The XHTML pages displayed on the Microbrowser can contain static or
dynamic information.
Static XHTML. These pages are created using XHTML editors and hosted by
the Web server. These pages are accessed from the Microbrowser (using HTTP
protocol) by entering the URL to access the page. These XHTML pages are
called static, because the information that is displayed is already coded into
the XHTML pages. These pages do not include information that keep changing
or contact other services for update.
Dynamic XHTML. These pages involves dynamic information updates of
XHTML pages by an application hosted on the Web server. The application
residing on the Web server will get information from an intranet or through
the Internet—data service providers like Yahoo, Exchange Server, Call Control
Servers and other enterprise servers.
Users can launch the Microbrowser on a SoundPoint IP or SoundStation IP
phone by pressing the Applications key, or if there isn’t one on the phone, it
can be accessed through the Menu key by selecting Features, and then
Applications.
The Microbrowser is supported on:
•SoundPoint IP 330/320 — screen resolution - 102*22 pixels (3” by 1”)
•SoundPoint IP 430 — screen resolution – 132*46 pixels (3.5”*1.5”)
•SoundPoint IP 501 — screen resolution – 160*80 pixels (4” by 2”)
•SoundPoint IP 550/560/601/650 — screen resolution – 320*160 pixels (4”
by 2”)
•SoundPoint IP 670 — screen resolution – 320*160 pixels (4” by 2”)
•SoundStation IP 4000/6000 — screen resolution – 240*68 pixels (2.4” by
0.8”)
•SoundStation IP 7000 — screen resolution – 255*60 pixels (3” by 1.5”)
What is XHTML
XHTML is the abbreviation of eXtensible HyperText Markup Language.
XHTML 1.0 is a transformation of HTML 4.01 into valid XML. The use of the
stricter XML syntax makes parsing of XHTML much easier for small clients,
but XHTML 1.0 was also the first step towards making HTML easily
extensible. Moving to XML allowed the methods used to create XML
extensions to apply to HTML as well. Step two occurred with XHTML 1.1,
Note As of SIP 2.2, the Services key and menu entry were renamed Applications,
however the functionality remains the same.

Overview
1 - 3
where XHTML was divided up into ‘modules’, where any features above and
beyond a skeleton set were grouped into individual modules. User agent (UA)
developers could then decide which extensions to support. A simple user
agent can be considered a fully compliant user agent by supporting only the
Basic module, whereas a more powerful browser can support all the official
modules, as well as those developed by third parties.
Modularization is also intended to help content creators. As more and more
devices become web-enabled, the number of platforms a content creator will
be asked to support will become unreasonable. By dividing HTML up into
different ‘building blocks’ content creators can supply a minimal version of
their site for user agents that only support the Basic module, a moderate
version of their site for user agents who support the additional modules, and
a full version of their site for user agents that support the full range of the
XHTML specification.
Finally the X in XHTML was intended to help people who wish to extend
HTML. The use of XML brought a standard grammar with which they could
define their extension, and the modularization meant that their extension
would be just another module that a user agent developer or content creator
could choose to support. Additionally, since XHTML pages should state what
modules are required to accurately render them, the user agent software could
dynamically load a ‘plug-in’ that it could use to render a module that was
defined after the user agent had been originally released.
For more information, go to:
•HTML 4.0—http://www.w3.org/TR/1999/REC-html401-19991224
•XHTML™ 1.0—http://www.w3.org/TR/2002/REC-xhtml1-20020801
•XHTML™
Basic—http://www.w3.org/TR/2000/REC-xhtml-basic-20001219/
•XHTML™ 1.1—http://www.w3.org/TR/2001/REC-xhtml11-20010531/
•XHTML Tables Module -
XHTML™2.0—http://www.w3.org/TR/2004/WD-xhtml2-20040722/m
od-tables.html
For the purposes of this guide, it is assumed that you have experience in
HTML and XHTML programming or access to someone who has such
experience.
How to Create Applications
You can design the following types of applications:
•Web browser

Developer’s Guide SoundPoint IP / SoundStation IP
1 - 4
•Company directory
•Stock ticker
Depending on the type and complexity of the application, you might use one
of the following tools for creation:
•Text editor
•XML editor
•Microsoft Word
When designing applications, you might want to consider the following
guidelines:
1. Spend sufficient time designing the application by:
—Developing a conceptual design
—Describe all user-application interactions
—Plan for all user types
2. Create standardized applications to assist in:
—Lowering design time
—Speed up debugging
—Increasing usability
3. Promote consistent output and predictable user input.
4. Create a prototype application to test on sample users.
5. Thoroughly test your application before releasing to:
—Identify all user interface issues
—Verify that all error conditions are caught cleanly
For step-by-step instructions on how to develop an XHTML application that
can be run on the Microbrowser of all SoundPoint IP and SoundStation IP
phones, refer to Application Development on page 2-1.
Note These guidelines are for your information only. You are solely responsible for
determining the suitability and applicability of this information to your needs.
Note Polycom is not responsible for troubleshooting any programming that you create for
the Microbrowser.

2 - 1
2
Application Development
This chapter provides information on supported XHTML elements. It
describes HTTP support and the Microbrowser user interface. It also describes
the configuration parameters that can be found in sip.cfg .
This chapter presents step-by-step instructions on how to develop an XHTML
application that can be run on the Microbrowser of certain SoundPoint IP and
SoundStation IP phones.
This chapter contains information on:
•Supported XHTML Elements
•HTTP Support
•Microbrowser User Interface
•Developing an XHTML Application
To troubleshoot any problems with your applications, refer to
Troubleshooting on page 3-1.
Supported XHTML Elements
The Microbrowser supports a subset of XHTML elements. Most are derived
from HTML 4.01.
The supported elements and attributes are:
•Basic Tags
•Link Tags
•Input Tags
•Image Tags
Note Polycom is not responsible for troubleshooting any programming that you create for
the Microbrowser.

Developer’s Guide SoundPoint IP / SoundStation IP
2 - 2
•Table Tags
•Meta Information Tags
Unsupported elements and attributes are described in Unsupported XHTML
Elements on page A-1.
Basic Tags
The following basic tags are supported:
•<!DOCTYPE>—Defines the document type
•<!--...-->—Defines a comment
<!DOCTYPE>
The <!DOCTYPE> declaration is the very first thing in your document, before
the <html> tag. This tag tells the browser which XHTML specification the
document uses. XHTML 1.0 specifies three XML document types: Strict,
Transitional, and Frameset.
•XHTML Strict
—Use this DTD when you want clean markup, free of presentational
clutter.
For example,
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
•XHTML Transitional
—Use this DTD when you need to use XHTML's presentational features.
For example,
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0
Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
•XHTML Frameset
—Use this DTD when you want to use frames.
For example,
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0
Frameset//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd">
This tag does not have any attributes.

Application Development
2 - 3
<!--...-->
The comment tag is used to insert a comment in the source code. A comment
will be ignored by the browser. You can use comments to explain your code,
which can help you when you edit the source code at a later date.
This tag does not have any attributes.
Link Tags
The following link tag is supported:
•<a>—Defines an anchor
<a>
The <a> tag defines an anchor. An anchor can be used to create a link to
another document by using the href attribute.
The following attributes are supported:
Input Tags
The following input tags are supported:
•<form>—Defines a form
•<input>—Defines an input field
Note The Microbrowser supports both
http:// and tel:// URL schemes. When a tel://
URL is selected, the phone switches to the telephony application and dials the
number specified in the URL. Currently the number is dialed as-is, however, full
support for tel:// URL parsing as specified in RFC 2806 will be available in a future
release.
sip:// URLs are not supported at this time.
Attribute Value/s Description
href URL (Ex:” www.polycom.com”) The target URL of the link
name section_name Names an anchor. Use this
attribute to create a bookmark in a
document.
In future versions of XHTML the
name attribute will be replaced by
the id attribute.
Note: This attribute is parsed, but
not used.

Developer’s Guide SoundPoint IP / SoundStation IP
2 - 4
<form>
The form element creates a form for user input. A form can contain text fields,
check boxes, radio buttons and more. Forms are used to pass user data to a
specified URL.
The following attributes are supported:
Note The Microbrowser supports both the GET and POST methods for submitting forms.
Nesting forms within tables is supported. However, nesting of one form tag within
another is not supported and may lead to unexpected results.
Attribute Value/s Description
action URL
Ex: http://www.google.com A URL that defines where to send
the data when the submit button is
pushed
method get
post The HTTP method for sending data to the action URL. Default is
get.
method="get": This method
sends the form contents in the
URL:
URL?name=value&name=value.
Note: If the form values contains
non-ASCII characters or exceeds
100 characters you MUST use
method="post".
method="post": This method
sends the form contents in the
body of the request.
Note: Most browsers are unable to
bookmark post requests.
name form_name Defines a unique name for the
form

Application Development
2 - 5
<input>
The <input> tag defines the start of an input field where the user can enter
data. In XHTML the <input> tag must be properly closed.
The following attributes are supported:
Attribute Value/s Description
checked checked Indicates that the input element
should be checked when it first
loads.
Note: Used with type="checkbox"
and type="radio"
name field_name Defines a unique name for the
input element.
Note: This attribute is required
with type="button",
type="checkbox", type="file",
type="hidden", type="image",
type="password", type="text", and
type="radio"
type checkbox
hidden
password
radio
reset
submit
text
Indicates the type of the input
element. The default value is "text"
Note: This is not a required
attribute, but we think you should
include it. If omitted, IE 5.5 will still
display a text field, but Netscape
4.7 will not.
value value For buttons, reset buttons and
submit buttons: Defines the text on
the button.
For image buttons: Defines the
symbolic result of the field passed
to a script.
For checkboxes and radio buttons:
Defines the result of the input
element when clicked. The result
is sent to the form's action URL.
For hidden, password, and text
fields: Defines the default value of
the element.
Note: Cannot be used with
type="file"
Note: This attribute is required
with type="checkbox" and
type="radio"

Developer’s Guide SoundPoint IP / SoundStation IP
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Image Tags
The following image tag is supported:
•<img>—Defines an image
The Microbrowser supports images stored in uncompressed .bmp format.
While all BMP bit depths will be displayed to the best of the phone’s ability, it
is recommended that the image format most suitable for the target platform be
chosen. For example:
•The SoundPoint IP 601 LCD supports four levels of grey, so a 16-color
BMP format would be most appropriate.
•The SoundPoint IP 670 LCD supports 12-bit color.
Images can be scrolled up and down, however images that are too wide will
be truncated.
Various platforms have differing limits due to memory. There are also
differing pixel limits for devices of differing pixel depth. A 1 bit per pixel
image 160x80 requires only 1600 bytes. For a 24 bit picture, the memory
requirement is 38400 bytes.
There are several limits depending on the source data (this involves the cache
limits in configuration) and the display converted data, which is dependant on
available RAM (and is limited in the code depending on platform).
<img>
The img element defines an image.
The following attributes are supported:
Note The "align", "border", "hspace", and "vspace" attributes of the image element are
not supported in XHTML 1.0 Strict DTD.
Attribute Value/s Description
src URL
(Ex:
“http://www.topxml.com/images/to
pxml_site.gif”
or ”c:\images\img1.jpg” )
The URL of the image to display
height Pixels (number, EX: “30” )
%Specifies the height of the image in pixel or percent.
width Pixels (number, EX: “30” )
% Specifies the width of the image in
pixel or percent.

Application Development
2 - 7
Table Tags
The following table tags are supported:
•<table>—Defines a table
•<tr>—Defines a table row
•<td>—Defines a table cell
•<tbody>—Defines a table body
<table>
The <table> tag defines a table. Inside a <table> tag you can put table headers,
table rows, table cells, and other tables.
The following attributes are supported:
Note XHTML tables must be properly formatted (should include <tbody> and </tbody>
tags).
Attribute Value/s Description
align Left
center
right
Aligns the table. Deprecated. Use
styles instead.
border Pixels (number, EX: “30” ) Specifies the border width.
Tip: Set border="0" to display
tables with no borders!
cellpaddin
gPixels (number, EX: “30” )
%Specifies the space between the
cell walls and contents
cellspacin
g Pixels (number, EX: “30” )
%Specifies the space between cells.
width %
Pixels (number, EX: “30” ) Specifies the width of the table

Developer’s Guide SoundPoint IP / SoundStation IP
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<tr>
This tag defines a row in a table.
The following attributes are supported:
<td>
This tag defines a cell in a table.
The following attributes are supported:
Attribute Value/s Description
align right
left
center
justify
char
Defines the text alignment in cells.
Attribute Value/s Description
align left
right
center
justify
char
Specifies the horizontal alignment
of cell content
colspan number Indicates the number of columns
this cell should span.
rowspan number Indicates the number of rows this
cell should span.

Application Development
2 - 9
<tbody>
This tag defines a table body. The thead, tfoot and tbody elements enable you
to group rows in a table.
The following attributes are supported:
Meta Information Tags
The following meta information tags are supported:
•<head>—Defines information about the document
<head>
The head element can contain information about the document. The browser
does not display the “head information” to the user. The following tag can be
in the head section: <title>.
No attributes are supported.
HTTP Support
The Microbrowser is a fully compliant HTTP/1.1 user agent:
•It supports:
—Cookies
—Refresh headers
—HTTP proxies
Attribute Value/s Description
align right
left
center
Defines the text alignment in cells.
Note Due to space constraints, there isn’t a static title bar at the top of the Microbrowser
window, as there is in most other browsers. The title is displayed in large bold text
in the first line of the page, and is scrolled off the screen as the focus is moved
down the page.
Note Cookies are stored in RAM, therefore they are not are not preserved when the
phone reboots or is reconfigured. Cookies are not shared between the idle display
Microbrowser and the main Microbrowser.

Developer’s Guide SoundPoint IP / SoundStation IP
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—HTTP over SSL/TLS
—Self-signed or custom CA certificates
•There are the following exceptions:
—There is no sophisticated caching. The HTML cache refresh META tag
is not supported.
—Any images in the body of a document with the same URL are
assumed to be the same image. The image is loaded from the
Microbrowser’s memory instead of making another request to the
server.
—When a new page is requested, the Microbrowser’s internal memory
is cleared and all components of the new page are downloaded from
the server.
Microbrowser User Interface
Two instances of the Microbrowser may run concurrently:
•An instance with standard interactive user interface
SoundPoint IP 430
SoundPoint IP 501SoundPoint IP 650
SoundStation IP 4000