Huawei AR1200 Series Configuration Manual - Voice page 30

Huawei AR1200 Series Enterprise Routers
Configuration Guide - Voice
By default, a country/region identifier is China mainland.
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Setting Upper and Lower Thresholds for Hookflash Pressing
The upper and lower thresholds for hookflash pressing determine the hookflash duration.
Context
Hookflash is a button on a telephone that simulates quickly hanging up and then picking up again
(a quick off-hook/on-hook/off-hook cycle). If the hookflash duration is smaller than the upper
threshold for hookflash pressing, the SIP AG considers that the user presses the hookflash. If
the hookflash duration is greater than the upper threshold, the SIP AG considers that the user
hangs up the phone.
The hookflash can be pressed by a calling party or a called party:
l
l
After user A presses the hookflash:
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l
l
l
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
voice
The voice view is displayed.
Step 3 Run:
flash-hook lower lower-value
The lower threshold for hookflash pressing is set.
By default, the lower threshold for hookflash pressing is 100 ms.
Step 4 Run:
flash-hook upper upper-value
Issue 03 (2011-09-30)
Hookflash pressed by a called party: If the called party user A wants to transfer an incoming
call to user B or another phone, user A can press the hookflash and dial number C (number
of user B or another phone).
Hookflash pressed by a calling party: User A calls user B. User B answers the call and talks
with user A. User A can press the hookflash and dial the number of user C after hearing a
special dial tone.
If user C is busy, user A can press the hookflash and talk with user B.
If user C does not respond for a long period of time, user A can press the hookflash and
talk with user B.
If the phone of user C rings, user A hangs up and user B hears the ringback tone. User C
picks up the phone and talks with user B.
Whether a called party can be transferred to a toll call is restricted by the outgoing right of
the called party.
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1 SIPAG Configuration
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