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Deploying Polycom CX700 Phone within a Microsoft Office Communications Server 2007 R2 Environment
5
Outlook 2007 uses Active Directory Service Connections Points (SCP) and
DNS SRV records to locate Exchange Server 2007 CAS. However, the device
does not support these additional methods.
The Autodiscover service finds and presents the various URLs that are used to
interact with Exchange Web Services and information about how to connect
Outlook 2007 to Exchange Server 2007. The device uses those URLs to retrieve
the Outlook contacts, call logs, and voice mails from Exchange Server 2007.
Polycom CX700 Phone Querying of Exchange Server 2007
The device must be able to resolve to the Exchange Web Services URL and
connect to it using HTTP or HTTPS.
NTP and the Polycom CX700 IP Phone
Network Time Protocol (NTP) is the default time synchronization protocol
that is used by the Windows Time service in Windows Server 2003. NTP is a
fault-tolerant, highly scalable, time protocol that is used most frequently for
synchronizing computer clocks. It does this by using a designated time
reference. The Polycom CX700 phone requires NTP to set the correct time and
date for the Polycom CX700 phone.
NTP Time Provider
The NTP provider is the standard time provider that is included with
Windows Server 2003. The NTP provider in the Windows Time service
consists of the following two parts:
• NtpServer output provider. This is a time server that responds to client
time requests on the network.
• NtpClient input provider. This is a time client that obtains time
information from another source, either a hardware device or an NTP
server, and can return time samples that are useful for synchronizing the
local clock.
If HTTPS is enabled, the certificate must be trusted by the device.
The Polycom CX700 phone tries to connects to the Exchange Server 2007
Autodiscover service in the following order:
• https://<SMTP domain>/autodiscover/autodiscover.xml
• https://autodiscover.<SMTP domain>/autodiscover/autodiscover.xml
• http -> https redirect
On successful response, the Polycom CX700 phone connects to the Exchange
Web Service URL in the Autodiscover response XML.
The certificate from Exchange Server 2007 must be trusted.