Cisco Cisco Expressway Maintenance Manual
Search History
The Search history page (Status > Search history) lists the most recent 255 searches that have taken place since
the Expressway was last restarted.
the Expressway was last restarted.
About searches
Before a call can be placed, the endpoint being called must be located. The Expressway sends and receives a series
of messages during its attempt to locate the endpoint being called; these messages are each known as searches. An
individual call can have one or more searches associated with it, and these searches can be of different types.
of messages during its attempt to locate the endpoint being called; these messages are each known as searches. An
individual call can have one or more searches associated with it, and these searches can be of different types.
The type of search message that is sent depends on whether the call is for SIP or H.323, and whether the call request
was received locally or from an external zone, as follows:
was received locally or from an external zone, as follows:
■
H.323 calls that are placed locally: two messages are sent - the first is an ARQ which locates the device being
called, and the second is the call Setup which sends a request to the device asking it to accept the call. Each
message shows up as a separate search in the Search history page, but only the Setup message is
associated with a particular call.
called, and the second is the call Setup which sends a request to the device asking it to accept the call. Each
message shows up as a separate search in the Search history page, but only the Setup message is
associated with a particular call.
■
H.323 searches originating from external zones: an LRQ will appear in the Search history page.
■
SIP: a single message is sent in order to place a call: this is either a SIP INVITE or a SIP OPTIONS.
Note that an individual call can have one or more searches associated with it, and these searches can be of different
types. Each search has an individual Search ID; each call has an individual Call Tag (see
types. Each search has an individual Search ID; each call has an individual Call Tag (see
).
The Expressway supports up to 500 concurrent searches.
Search history list
The search history summary list shows the following information:
Field
Description
Start time
The date and time at which the search was initiated.
Search
type
type
The type of message being sent.
Source
The alias of the endpoint that initiated the call.
Destination The alias that was dialed from the endpoint. This may be different from the alias to which the call was
actually placed, as the original alias may have been transformed either locally or before the neighbor
was queried.
was queried.
Status
Indicates whether or not the search was successful.
Actions
page, which lists full details of this search.
Filtering the list
To limit the list of searches, enter one or more characters in the Filter field and click Filter. Only those searches that
contain (in any of the displayed fields) the characters you entered are shown.
contain (in any of the displayed fields) the characters you entered are shown.
To return to the full list of searches, click Reset.
Search Details
The Search details page lists full information about either an individual search, or all searches associated with a
single call (depending on how you reached the page). The information shown includes:
single call (depending on how you reached the page). The information shown includes:
■
the subzones and zones that were searched
■
the call path and hops
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Cisco Expressway Administrator Guide
Overview and Status Information