Avaya 4600 Series Anwendungshinweis PDF herunterladen (Seite 65)

Subscription List (SUBSCRIBELIST)

Issue 1 April 2005 65

Subscription Update

Use the Subscribe push type to make an asynchronous request to a phone to re-subscribe and

update all the values defined in the syntax examples above.

Note:

Note: See Chapter 3: Creating Push Messages for more details on sending a

Subscribe Push Request to the telephone.

An exact string-based comparison is done to match the subscription URIs against the values in

the SUBSCRIBELIST. If the subscription server URI does not exactly match the values in the

SUBSCRIBELIST, the subscription request is aborted.

Retry Timer

If the subscription server is unresponsive to the initial subscription message from the phone at

boot up and does not return a Message 200 (OK), then the subscription service retry timer will

send subscription messages to the subscription server every 20 minutes, up to five times.

The retry timer does not apply to a subscription update from the subscription server.

Denial of Service Timer

The Denial of Service Subscription Timer limits the number of subscription updates requested

by the trusted subscription service. The Push Agent following a successful subscription will

accept only one subscription request per minute. This implies that the Push Agent in the

telephone can handle one subscription request per minute.

The denial of service timer starts following a Push Request for Subscribe. No Subscribe request

is accepted for the next minute. If another Subscribe request is received within that time, the

response is as follows:

Parameter Status Code Reason Phrase

HTTP Status Code 200 “OK”

x-Push-Status 503 “Service Unavailable”

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Avaya 4600 Series Anwendungshinweis Seite 65