[MS-ASCMD]: ActiveSync Command Reference Protocol Specification

Either the HeartbeatInterval element or the Wait element (section 2.2.3.171) can be included in
a Sync command request, but not both. If both elements are included, the server response will
contain a Status element value of 4.
When the HeartbeatInterval element is used in a Sync command request, the element indicates
to the server that a response SHOULD be delayed either until the interval, which is indicated by the
contents of the HeartbeatInterval element, elapses or until any of the collections that are included
in the request have changed.
It is at the discretion of the client to send the HeartbeatInterval element; the server is only
guaranteed to respond immediately when neither the HeartbeatInterval element nor the Wait
element (section 2.2.3.171) are present. The client typically requires a server response immediately
in the following cases:
•The client adds new items by using the Add element (section 2.2.3.7.2). In this case, an
immediate response is required because the client requires the server-provided item ID to track
changes to those new items.
•The client sends the server a Change element (section 2.2.3.23) that contains an important
update. In this case, a delayed response increases the possibility that the client has to resend the
change because of a lost connection.
Although the server is only guaranteed to respond immediately when the HeartbeatInterval
element and the Wait element (section 2.2.3.171) are not present, the server SHOULD always
respond immediately to a Sync command request that includes an Add element or a Change
element, unless the addition or change involves only flags.
A flagging change or a move out of (and not into) a folder which is being synced SHOULD NOT
cause the request to finish early.
2.2.3.76 Id
The Id element is a required child element of the Folder element in Ping command requests that
specifies the server ID of the folder to be monitored.
Elements referenced in this section are defined in the Ping namespace, except where otherwise
indicated by the presence of a namespace prefix (as defined in section 2.2.1).
Command
request/response
Parent
elements
Child
elements
Data type
Number
allowed
Ping command request
(section 2.2.2.11.1)
Folder (section
2.2.3.62)
None
string ([MS-
ASDTYPE] section
2.6)
1…1
(required)
The server ID of the folder is obtained from the folderhierarchy:ServerId element (section
2.2.3.141) of a previous FolderSync command response (section 2.2.2.4.2) or FolderCreate
command response (section 2.2.2.2). The Id element value can be up to 64 characters in length.
2.2.3.77 IMEI
The IMEI element is an optional child element of the Set element in Settings command requests
that specifies a 15-character code that MUST uniquely identify a device.
All elements referenced in this section are defined in the Settings namespace.
[MS-ASCMD] — v20110315
ActiveSync Command Reference Protocol Specification
Copyright © 2011 Microsoft Corporation.
Release: Tuesday, March 15, 2011
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