This attribute specifies the number of digits that must be received before an address resolution request will be sent to the VoiceNetworkingCallServer. Once this level has been exceeded an address resolution request will be sent for every digit received until the dialled number has been resolved in the database. This number should be set to a value which represents the average number of digits that will allow for a unique end-point to be identified. If the number is set too low, then the number of simultaneous calls that can be handled by the VoiceNetworkingCallServer will be reduced since the number of address resolution requests sent for each call will be increased. If it is set too high then address resolution request messages will not be sent to the VoiceNetworkingCallServer until the end-of-dial timer has expired (approximately 12 seconds after the last digit has been received). This can result in very long call setup times.