Setting the switch hook query time out value
When you set the switch hook query time out value, the degree of network congestion or delay determines the speed of the switch hook query response.
The range value for the switch hook timer is from 500 to 5000 milliseconds (ms). IP hard phones located geographically close to Communication Manager respond to the timer within the 500-750 ms range. However, IP Agent or one-X® Agent endpoints on a personal computer take longer to respond, so you must set the timer to more than 2000 ms. In all cases, set the time out long enough to prevent false triggering. A longer time out period does not delay the delivery of calls when connectivity is intact as the response to the query returns quickly. The caller hears a portion of ringback while waiting for a response to the switch hook query with an auto-answer delivery.
