ATCOM AT840 series User manual

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Version: 1.0
201 3 - 01 - 15

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C
C
C
C ontent
ontent
ontent
ontent
Contact ATCOM ....................................................................................................................................... 4
1. AT840 Series Overview .................................................................................................................. 5
1) Interfaces ........................................................................................................................................................... 6
2) Hardware ............................................................................................................................................................ 6
3) Software .............................................................................................................................................................. 6
4) Network ............................................................................................................................................................... 7
5) Management and Maintenance .................................................................................................................. 7
6) Protocol ............................................................................................................................................................... 7
7) Compliant Standard ........................................................................................................................................ 8
8) Operating Requirement ................................................................................................................................. 8
9) Packing List ........................................................................................................................................................ 8
10) Installation ...................................................................................................................................................... 8
2. Keypad of IP Phone ....................................................................................................................... 12
1) Describe of the buttons and Screen ....................................................................................................... 12
2) BLF indicator status ...................................................................................................................................... 13
3. Basic functions and operations ................................................................................................. 14
1) Answer the calls ............................................................................................................................................. 14
2) Make Call .......................................................................................................................................................... 14
3) Speed dial ......................................................................................................................................................... 15
4) Multiple line dial-up ...................................................................................................................................... 15
5) Hang up the phone ....................................................................................................................................... 15
6) Call Transfer ..................................................................................................................................................... 16
7) Message waiting indication(MWI) ........................................................................................................... 16
8) Mut e calls ......................................................................................................................................................... 16
9) Call Hold ............................................................................................................................................................ 17
10) 3-Way Conference Calls ........................................................................................................................... 17
11) Call History .................................................................................................................................................... 17
12) SMS function ................................................................................................................................................. 18
13) Default Password ........................................................................................................................................ 19
14) Check the Phone ’ s IP ................................................................................................................................. 19
15) Dial Plan ......................................................................................................................................................... 19
4. Web settings ..................................................................................................................................... 22
1) System stat us ................................................................................................................................................. 23
2) Network ............................................................................................................................................................. 24
1.1. Basic ......................................................................................................................................................... 24
1.2. Advance ................................................................................................................................................... 24
3) SIP Setting ....................................................................................................................................................... 26
4) Account .............................................................................................................................................................. 29
Account1 / Account 2/ Account 3/ Account 4 ............................................................................................ 29
5) Phone Setting ................................................................................................................................................. 31
5.1. Preference
.............................................................................................................................................
31

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5.2. Line ......................................................................................................................................................... 33
5.3. Features
................................................................................................................................................
34
5.4. Voice
.......................................................................................................................................................
35
5.5. Ring ........................................................................................................................................................ 36
5.6. Tone ........................................................................................................................................................ 36
5.7. Programmable key ............................................................................................................................ 37
5.7. Ext Key .................................................................................................................................................. 38
6) Update ............................................................................................................................................................... 39
6.1. Manual Update
...................................................................................................................................
39
6.2. Reset & Reboot
...................................................................................................................................
40
7) Phone Book
.............................................................................................................................................
40
8) Call Log ...................................................................................................................................................... 41
5. FAQ & Trouble Shooting ............................................................................................................... 41
1) Frequently Asked Questions ....................................................................................................................... 41
1.1 How to realize the factory reset .................................................................................................... 41
1.2 Upgrade firmware under safe mode ............................................................................................ 41
1.3 How to make direct IP call .............................................................................................................. 42
2) Trouble Shooting ............................................................................................................................................. 42
2.1 The phone can ’t register successfully ...................................................................................... 42
2.2 The phone can ’t obtain IP address ........................................................................................... 42
2.3 Only one part can hear the voice during the call
...................................................................
43

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Contact
Contact
Contact
Contact ATCOM
ATCOM
ATCOM
ATCOM
The
The
The
The Introduction
Introduction
Introduction
Introduction of
of
of
of ATCOM
ATCOM
ATCOM
ATCOM
ATCOM is the leading VoIP hardware manufacturer in global market. We have been keeping innovating with
customer ’s needs oriented , working with partners to establish a total solution for SMB VoIP with IP phone , IP
PBX and Asterisk cards
With over 10 years ’experience of R&D , manufacturing and service in network and VoIP filed ; mission of
creating the biggest value for IP terminals , we commit ourselves in supplying the competitive IP phone and
other terminals for IP PBX , softswitch , IMS , NGN providers and carriers; supplying the competitive total
VoIP solution for SMB market. We keep improving the customer ’s experience and creating the bigger value
with our reliable
products. Until now , our VoIP products has been sold to over 60 countries and used by millions of end users.
Contact
Contact
Contact
Contact Sales
Sales
Sales
Sales
Address Area C, A2F , Block 3 ,Huangguan Technology Park , #21 Tairan 9th Rd,
Chegongmiao , Futian District , Shenzhen China
Tel + (86) 755- 83018618-8888
Fax + (86) 755- 83018319
E-mail [e-mail]
Contact
Contact
Contact
Contact Technical
Technical
Technical
Technical Support
Support
Support
Support
Tel + (86) 755- 83018618-8 011
E-mail [e-mail]
Website
Website
Website
Website Address
Address
Address
Address :http://www.atcom.cn/
Download
Download
Download
Download Center
Center
Center
Center :http://www.atcom.cn/download.html

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1.
1.
1.
1. AT840
AT840
AT840
AT840 Series
Series
Series
Series Overview
Overview
Overview
Overview
AT840 is almost the same with AT840P without PoE
AT840 /AT840P
AT840 /AT840P with extension module
Type
Type
Type
Type P
P
P
P o
o
o
o E
E
E
E Power
Power
Power
Power adapter
adapter
adapter
adapter
AT810 No Standard a ccessory
AT810P Yes Optional accessor y

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1)
1)
1)
1) Interfaces
Interfaces
Interfaces
Interfaces

Power input : DC 12 V, 500mA

WAN : RJ45 port

PC : RJ45 port

EXT: RJ45 port
Headset jack 1 : RJ9 port
H and set jack 1 : RJ9 port
2)
2)
2)
2) Hardware
Hardware
Hardware
Hardware
LCD: 128 × 64 dot matrix
FLASH: 8 M
RAM: 32 M
CPU: 262MHz Dual Core
LED indicator : 1 Status Light , 4 line indicators, 9 BLF indicator s , 1 voicemail indicator, 1
headset indicator, 1 mute indicator, 1 hand-free indicator

Expander board: 20 BLF keys on each expander board, can connect at most 5 expander
boards on a AT840.
3)
3)
3)
3) Software
Software
Software
Software
Sip 2.0 (RFC3261) and other related SIP RFC
4 SIP lines
STUN
Jitter Buffer ,VAD,CNG
G.711A/u, G722, G.723, G.726 -16, G.726-24 , G.726-32, G.726-40, G.729 , Lin16-16,
iLBC Codec
G.168 compliant 96ms echo cancellation
Support SIP domain ，SIP authentication(none , basic,MD5),NDS.
Support inb a nd, RFC2833 and SIP info , DTMF transmission way
Call Forward , Call transfer , Call hold , Call waiting, 3-way conference, Pickup , Redial , Call
Par k
Dial without register
Support Hot line , DND(Do Not Disturb) , Blacklists , Dial rule, IP to IP call
Phone book with 2 00 records, 2 00 answered call s, 2 00 missed call s, 200 dialed calls
Support HTTP , FTP , TFTP updating the configuration and firmware
Syslog
Auto answer
Support SNTP client
WEB control

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
Support different level user management

Support multi - language

soft button: soft button * 4

Support BLF

Support SMS

Support auto provision for config file upgrade
4)
4)
4)
4) Network
Network
Network
Network
WAN/ PC ：Support bridge mode

Support PPPoE （ADSL , cable modem use for I nternet connecting ）

Support VLAN （DATA VLAN and VOICE VLAN ）

Support L2TP VPN

WAN support Primary and Secondary DNS

WAN support DHCP Client

Qos support Diffserv
5)
5)
5)
5) Management
Management
Management
Management and
and
and
and Maintenance
Maintenance
Maintenance
Maintenance
Support safe mode and firmware updating under safe mode
Support different level user management
Configuration via web , keyboard
Support multi - language
Firmware and configuration updating via HTTP , FTP and TFTP
Support system log and call log
Firmware and configuration file auto provision
6)
6)
6)
6) Protocol
Protocol
Protocol
Protocol

IEEE 802.3 /802.3 u 10 Base T / 100Base TX
PPPoE ：PPP over Ethernet

WAN support DHCP Client

SIP RFC3261, RFC3262, RFC3263, RFC3264, RFC3265, RFC2543, RFC3489, RFC3842,
RFC3515, RFC2976, RFC3428, RFC2327, RFC2782, RFC1889

TCP/IP: Transfer Control Protocol/Internet Protocol

RTP: Real-time Transport Protocol

RTCP : RTP Control Protocol

VAD/CNG

DNS: Domain Name Server

TFTP : Trivial File Transfer Protocol

HTTP : Hypertext Transfer Protocol

FTP : File Transfer Protocol

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7)
7)
7)
7) Compliant
Compliant
Compliant
Compliant Standard
Standard
Standard
Standard

CE : EN55024,EN55022

Comply with ROHS in EU

Comply with ROHS in China

Explanation:
Explanation:
Explanation:
Explanation:
The letter “ e ” is the first letter of “ environment: and “ electronic ” . The rim is a round with two
arrow, stands for recycle. The number 20 stands for the years of environment protection. Please
note the years of environment protection is not discarding year nor usage life.
8)
8)
8)
8) Operating
Operating
Operating
Operating Requirement
Requirement
Requirement
Requirement
Operation temperature: 0 to 4 5 ° C (32 ° to 113 ° F)
Storage temperature: - 5 ° to 5 5 ° C ( 12 ° to 1 31 ° F)

Humidity: 10 to 90% no dew
9)
9)
9)
9) Packing
Packing
Packing
Packing List
List
List
List
Model
Model
Model
Model Phon
Phon
Phon
Phon
e
e
e
e
Handset
Handset
Handset
Handset Handset
Handset
Handset
Handset
line
line
line
line
Power
Power
Power
Power
adapter
adapter
adapter
adapter
Manual
Manual
Manual
Manual
CD
CD
CD
CD
Feet
Feet
Feet
Feet
underprop
underprop
underprop
underprop
EX20B
EX20B
EX20B
EX20B
AT810 1 1 1 1, Standard
a ccessory
1 3 Optional
AT810P 1 1 1 Optional
a ccessory
1 3 Optional
Note: Power adapter ( Input: AC 100~240V, 50/60Hz; Output : 12 V , 500m A ; )
10)
10)
10)
10) Installation
Installation
Installation
Installation
Use Ethernet cable to connect AT840 ’ s LAN port and your computer. on the same switch, AT840
default to us e DHCP to obtain IP from switch . Check AT840 IP by press MENU -> 9.Network ->
1.LAN ->2.Current IP (default password:123). Then o pen web browser and key in the IP, you will
see the login page of AT840 , the default username is admin for administrator and user for user,
no password was set for them, you can set password in webpage by yourself.
Set
Set
Set
Set up
up
up
up page
page
page
page for
for
for
for VoIP
VoIP
VoIP
VoIP user
user
user
user only:
only:
only:
only:

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Internet
PC
Switch
SIP Server
AT 840 AT 840 AT 840 AT 840
Feet
Feet
Feet
Feet installation
installation
installation
installation instruction
instruction
instruction
instruction
1) Desktop position:
A. Put the bottom side of the IP phone upside and press the plate with letter “ PUSH ” into the
slot, please refer the picture as below:
B. Press the other plate into the slot in accordance with the direction of the arrow
C. Repeat A and B. It is the right picture of putting on desk after fixing the two feet below:

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D. Disassemble the feet:
Press the plate with word “ PUSH ” and pull the feet with the direction of arrow. When the
plate is pull out of the slot (there will be a sound of “ pa ” ) you can take off the feet
2) On wall position
A. Put the bottom side of the IP phone upside and push the plate with letter “ PUSH ” into the
slot, please refer the picture as below:
B. Push the other plate into the slot in accordance with the direction of the arrow
C. Repeat A and B. It is the picture of wall mounting after fixing the two feet below:

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D. Disassemble the feet way:
Press the plate with word “ PUSH ” and pull the feet with the direction of arrow. When the
plate is pull out of the slot (there will be a sound of “ pa ” ) you can take off the feet
Attention: Please rotate the hook to the position as in
picture with a coin or other tools

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2.
2.
2.
2. Keypad
Keypad
Keypad
Keypad of
of
of
of IP
IP
IP
IP Phone
Phone
Phone
Phone
1)
1)
1)
1) Describe
Describe
Describe
Describe of
of
of
of the
the
the
the buttons
buttons
buttons
buttons and
and
and
and Screen
Screen
Screen
Screen
Soft buttons Press to select an feature shown in the soft button features .
Soft button
features
Shows available choices based on current phone function
displayed on the last line of LCD screen .
Status light Shows the phone status, if the phone is standby, the LED is
with light. If there is income calling, the LED will flicker .

If the phone is starting ,the LED is flicker

If the phone is standby, the LED is off

If there is income calling, the LED will flicker . The
frequency is 500ms off, 500ms on .
LCD Screen Display screen for the phone: It shows the date, time, phone
number, incoming caller ’ s ID(if available),line/call status,
extension numbers and the soft button features.
Line indicators Shows extension number and status.

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2)
2)
2)
2) BLF
BLF
BLF
BLF indicator
indicator
indicator
indicator status
status
status
status
AT840 support s BLF in two ways, one is integrated on the IP phone, the other one is extended
interface.
The BLF indicator status:

When boot up,all the light blink for once.

When there is a coming call,the corresponding line key and status light will blink.
There are three colors for LED : red , green and orange.
If the line is registered, the LED shows green
If the line is registered failed, the LED shows orange .
Whenever it tries to register again after a while, the LED
shows red and starts flashing.
If the line has income calling, the LED shows red and
flicker at 500ms off, 500ms on.
If the line is on the calling , the LED shows red
If the line disable for register, the LED is off.
Navigation
button
Allows users to navigate(left, right, up, down) .
Dial pad E ntering numbers, letters or characters .
BLF Key All the function key can be defined as BLF key , Speed dial key
etc.
Menu Come into Keypad menu .
Volume buttons Adjust the volume .
Speakerphone
button
Pick up and hung up on the speakerphone mode, when pick
up by speakerphone, the LED of the button is on .
Mute button Mute the handset, headset or speakerphone by press the
Mute button; this prevents the person on the active call
form hearing what you or someone else in the room is
saying.
To cancel the Mute function, press the Mute button again.
If Mute the voice, the LED is light on this button .
Headset button Pick up and hung up on headset mode. When pick up by
headset, the LED button will light on.
Voicemail button Check the Voicemail status, if there are voicemail, the button
will light on.

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3.
3.
3.
3. Basic
Basic
Basic
Basic functions
functions
functions
functions and
and
and
and operations
operations
operations
operations
1)
1)
1)
1) Answer
Answer
Answer
Answer the
the
the
the calls
calls
calls
calls
When there is an incoming call, AT840 will remind user with ringing. There are 5 ways to answer
the call
A . Answer by handset
Pick up the handset and talk with the caller. If you want to hang up, just put back the handset.
When you are phoning with the handset and want to phone with hand-free mode, please press
the hand-free button and put down the handset.
B . Hand-free mode
Press the speaker button in the phone and talk with callers by built-in Micro-phone and Speaker.
If you want to hang up, please press the speaker button again. Lifting the handset in hand-free
mode will switch to hand-free mode talking.
C . Answer by earphone
Keep your earphone connected with the RJ9 earphone jack, when there is an incoming call, press
the earphone button on the IP phone and talk with the caller. If you want to hang up, please press
the earphone button again. Pressing hand-free key can change to hand-free mode, and lifting the
handset will change to hand-free mode.
2)
2)
2)
2) Make
Make
Make
Make Call
Call
Call
Call
A. Use the handset
Pickup the handset, the LCD will show the current lines (user could switch between line1 to line 4
by pressing the line button beside the LCD). Press soft key "dial" to send the number. When you
hear the tones of “ du~~du~~ ” with dialed number showed on the LCD, the called ’ s phone is
ringing. If the called answer the call, the phone call is established and the LCD will show the
calling time and the called ’ s number.
B . Answer the phone under hand-free mode
Press the Speaker Phone button, the LCD will show the current lines (user could switch between
line1 and line2 by pressing the line button beside the LCD). User can input the number with the
keyboard and press soft key "dial" to send the number. When caller hear the tones of
“ du~~du~~ ” with dialed number showed on the LCD, the called ’ s phone is ringing. If the called
answers the call, the phone call is established, and the LCD will show the calling time and the
called ’ s number.

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C . Dial from phone book
1. Press " Menu ” button and enter Directory->Personal Directory .Press " Select " to show the
total amount in telephone. U se "up" and "down" keys to find the contact person.When you find
the certain contact person, press" Dial " or just pickup the handset to call this number .
2. Pickup the handset, press "Dir", then select the contact person and press "Dial".
3)
3)
3)
3) Speed
Speed
Speed
Speed dial
dial
dial
dial
It ’ s method for the phone in standby mode to dial number immediacy.
The method is as below ：
A、Dial-up the number in standby mode
B、Press soft key "dial" to send out the number
Dial the number end with #, the number will be sent out immediately too,but only can used if pick
up the handset or press handfree/headset key.
4)
4)
4)
4) Multiple
Multiple
Multiple
Multiple line
line
line
line dial-up
dial-up
dial-up
dial-up
AT840 IP phone supports 4 S IP lines. That means user can register on 4 different sip accounts
simultaneity in the same IP phone. The User can choose line1 , line2 , line 3 or line 4 by press
corresponding line key , System default to use Line1 if you didn't choose line .
IP Phone be called:
AT840 maximum supports 8 concurrent call s. W hen the re is an incoming call to the second line,
LCD will show the incoming telephone number and line led will blinking . The User can press the
“ corresponding line key ” , or press soft button "Hold" then press “ A ns ” to receive the second line
call .
5)
5)
5)
5) Hang
Hang
Hang
Hang up
up
up
up the
the
the
the phone
phone
phone
phone
1) Headset hang up
When use handset mode calling, put back the handset to hang up.
2) Hands free hang up
When use hands free calling, press soft button “ speaker phone ” to hang up.
3) Earphone Hang up
When use Earphone calling, Press the soft button “ headset ” to hang up.
4) Hang up one line call
When 2 lines call simultaneous, press the hook will end the current call.
6)
6)
6)
6) Call
Call
Call
Call Transfer
Transfer
Transfer
Transfer
Attended call transfer
An attended call transfer allows a user to optionally transfer a call to a third party, after having a
discussion with that third party.

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During an active call, press the " xfer " soft key to place the current call on hold and to activate an
idle line key. Dialed the transfer target number on the newly activated line. When the target is
ringing or answered, press the " xfer " soft key again to complete the transfer.
Notes:
The case that transfer a call before the transfer target answer the phone is called semi-attended
call transfer. This is different from a blind transfer which is described in the next subsection.

Blind call transfer
A blind transfer allows the user to transfer a call without speaking with the receiver of the
transferred call. For the user, the call ends as soon as the transfer target ’ s phone number is dialed.
The underlying mechanism is the user ’ s phone sends the contact information for the transfer
target to the phone of the other party on the call. The information is carried in a signaling
message. When the message is sent, the user ’ s phone is dropped from the call and the other
party ’ s phone automatically dials the transfer target.
To perform a blind transfer press the right navigation key then press "Bxfer" soft key an d dial the
target number ,press "dial" to blind transfer the call to this target .
7)
7)
7)
7) Message
Message
Message
Message waiting
waiting
waiting
waiting indication(MWI)
indication(MWI)
indication(MWI)
indication(MWI)
The AT840 has an MWI key on the phone with an envelop ico. If user doesn't set the voicemail
number, pressing MWI key will require the setup of voicemail number. Then pressing the MWI key
can directly access the mailbox.
8)
8)
8)
8) Mut
Mut
Mut
Mut e
e
e
e calls
calls
calls
calls
The user can mute the audio input into the phone when an audio device is switched on, by
pressing the MUTE key. To un-mute, press the MUTE key again. If no audio device is on, pressing
the MUTE key has no effect. When switching from the speaker phone to the handset, the phone
is automatically un-muted. meanwhile Sip server must support RFC3515.
9)
9)
9)
9) Call
Call
Call
Call Hold
Hold
Hold
Hold
User can hold the current call by pressing soft button “ Hold ” . And by pressing soft button “ Resu m ”
or press the line key , user can get back to the previous call. In 3-way conference call mode, user
can also press this button to hold 3-way conference call, and if you press it again, user can go

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back to 3-way conference mode. If hang up without exiting the status of hold. The conversation
will not be canceled ; the line is still on hold.
10)
10)
10)
10) 3-Way
3-Way
3-Way
3-Way Conference
Conference
Conference
Conference Calls
Calls
Calls
Calls
To initiate a conference call:
Press the Conf soft button in a conversation to hear a dial tone.
Enter the telephone number of the third party and press dial key to send it out.
1 ) Press the " Conf " sof t button in Called party ringing state. When the third party answers the call,
it will enter 3-way conference automatically.
2 ) After the third party answers the call, pressing " Conf " key to enter 3-way conference.
3) Press " Join " soft button to leave the conference and make the two other parties still in a
conversation.
4) If user hangs up the call directly without pressing "Join" soft button, the conference will be
ended and the three parties are hanging up.
11)
11)
11)
11) Call
Call
Call
Call History
History
History
History
AT840 supports 2 00 missed calls, 200 incoming calls and 200 dialed calls. When the storage is full,
the latest call will update the history.
Press "redial" soft button when standby, all the incoming(->) outgoing(<-) and missed calls(!)
will be listed. There is other way to check them:
Missed call
Method 1:
1) When the LCD screen displays “ (number) Missed call(s) ” , press soft button “ Miss ed ” , then the
screen shows all the “ Missed Call ” .
2) Press navigation button to browse missed call history.
3) Choose the missed call record, press “ Dial “ soft button to call back it
4) Press "Delete" soft button to elect this item .
5) Press “ Edit “ soft button to edit th is item.
6) Press right navigation key then press "Save" soft button to save this number.
Method 2:
1) Press the "MENU" button.
2) Press the navigation button to choose “ C all H istory ” and then press OK button.
3) Press the navigation button to choose “ Missed C all s ” , press soft button OK.
4) Press the navigation button to browse the missed call record. If there is no record, the LCD
screen display “ List is Empty ” .
Incoming call
5) Press the "MENU" button.

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6) Press the navigation button to choose “ C all H istory ” and then press OK button.
7) Press the navigation button to choose “ Answered C all s ” , press soft button OK.
8) Press the navigation button to browse the incoming call record s . If there is no record, the LCD
screen display “ List is Empty ” .

Out going call
1) Press “ MENU ”
2) Press up or down navigation key, and select "C all history " and press soft button “ OK ”
3) Select “ Redial list ” through “ up ” or “ down ” key, and press soft button “ OK ”
4) Press up or down navigation button and check the received calls, LCD will show “ List is
Empty ” , if there is no received incoming call.
12)
12)
12)
12) SMS
SMS
SMS
SMS function
function
function
function

Create new SMS
1) P ress right navigation key
2) P ress SMS
3) P ress New
4) Edit SMS context and you can switch the input method by press right navigation key then
press "Alpha" to change to "Num", press "Num" to change to "IP".
5) When the edit is done , press " Send " and input receiver ’ s phone number or IP .
After inputting receiver's address, press Send to send out your message.

SMS Check new SMS
When there is a new SMS, voicemail indicator will flicker.
1) press right navigation key
2) press SMS
3) press View to check the new SMS
4) Press Reply to reply the SMS, or press Delete to delete this SMS
5) Press Cancel to exit.
13)
13)
13)
13) Default
Default
Default
Default Password
Password
Password
Password
There are 2 models to set the authority of web accessing and command line: User model and
Admin model. All the parameters can be visible and changed in Admin mode while part of them
can be visible in User mode .
Web
Web
Web
Web interface:
interface:
interface:
interface:
User Model
Username ：user no default Password
Admin Model ：
Username ：admin no default Password

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14)
14)
14)
14) Check
Check
Check
Check the
the
the
the Phone
Phone
Phone
Phone ’
’
’
’ s
s
s
s IP
IP
IP
IP
Press "MENU", default password is 123, then press 9 to enter "Network", you will see the network
mode and current IP .
15)
15)
15)
15) Dial
Dial
Dial
Dial Plan
Plan
Plan
Plan
The AT840 allows each extension to be configured with a distinct dial plan. The dial plan
specifies how to interpret digit sequences dialed by the user, and how to convert those sequences
into an outbound dial string.
The AT840 syntax for the dial plan closely resembles the corresponding syntax specified by MGCP
and MEGACO. Some extensions are added that are useful in an end-point.
Default: (xxxxxxxxxxxx.)
Which means allow dial out all kind of numbers.
Dial plan format : ( Dial_Plan 1 | Dial_Plan 2 | Dial_Plan 3 | Dial_Plan 4 )
For example : (*xx | [3469]11 | 0 | 00 | [2-9] xxxxxx | 1xxx [2-9] xxxxxxS0 | xxxxxxxxxxxx.)
The Dial_Plan parameters contain the actual dial plan scripts for each extension.
Dial Plan Digit Sequences:
The plans contain a series of digit sequences, separated by the ‘ | ’ character. The collection of
sequences is enclosed in parentheses, ‘ ( ‘ and ‘ ) ’ .
When a user dials a series of digits, each sequence in the dial plan is tested as a possible match.
The matching sequences form a set of candidate digit sequences. As more digits are entered by
the user, the set of candidates diminishes until only one or none are valid.
Any one of a set of terminating events triggers the AT840 to both accept the user-dialed sequence,
and transmit it to initiate a call, or else reject it as invalid. The terminating events are:
• No candidate sequences remain: the number is rejected.
• Only one candidate sequence remains, and it has been matched completely: the number is
accepted and transmitted after any transformations indicated by the dial plan, unless the
sequence is barred by the dial plan (barring is discussed later), in which case the number is
rejected.
• A timeout occurs: the digit sequence is accepted and transmitted as dialed if incomplete, or
transformed as per the dial plan if complete.
• An explicit ‘ send ’ (user presses the ‘ # ’ key): The digit sequence is accepted and transmitted as
dialed if incomplete, or transformed as per the dial plan if complete.

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The timeout duration depends on the matching state. If no candidate sequences are as yet
complete (as dialed), the Interdigit_Long_Timeout applies. If a candidate sequence is complete,
but there exists one or more incomplete candidates, then the Interdigit_Short_Timeout applies.
White space is ignored, and may be used for readability.
Digit Sequence Syntax:
Each digit sequence within the dial plan consists of a series of elements, which are individually
matched to the keys pressed by the user. Elements can be one of the following:
Individual keys ‘ 0 ’ , ‘ 1 ’ , ‘ 2 ’ . . . ‘ 9 ’ , ‘ * ’ , ‘ # ’ .
The letter ‘ x ’ matches any one numeric digit ( ‘ 0 ’ ... ‘ 9 ’ )
A subset of keys within brackets (allows ranges): ‘ [ ‘ set ‘ ] ’ (e.g. [389] means ‘ 3 ’ or ‘ 8 ’ or ‘ 9 ’ )
Numeric ranges are allowed within the brackets: digit ‘ - ‘ digit (e.g. [2-9] means ‘ 2 ’ or ‘ 3 ’ or … or
‘ 9 ’ )
Ranges can be combined with other keys: e.g. [235-8*] means ‘ 2 ’ or ‘ 3 ’ or ‘ 5 ’ or ‘ 6 ’ or ‘ 7 ’ or ‘ 8 ’ or
‘ * ’ .
Element repetition:
Any element can be repeated zero or more times by appending a period ( ‘ . ’ character) to the
element. Hence, “ 01. ” matches “ 0 ” , “ 01 ” , “ 011 ” , “ 0111 ” … etc.
Subsequence Substitution:
A subsequence of keys (possibly empty) can be automatically replaced with a different
subsequence using an angle bracket notation: ‘ < ’ dialed-subsequence ‘ : ’
transmitted-subsequence ‘ > ’ . So, for example, “ <8:1650>xxxxxxx ” would match “ 85551212 ”
and transmit “ 16505551212 ” .
Intersequence Tones:
An “ outside line ” dial tone can be generated within a sequence by appending a ‘ , ’ character
between digits. Thus, the sequence “ 9, 1xxxxxxxxxx ” sounds an “ outside line ” dial tone after the
user presses ‘ 9 ’ , until the ‘ 1 ’ is pressed.
Number Barring:
A sequence can be barred (rejected) by placing a ‘ ! ’ character at the end of the sequence. Thus,
“ 1900xxxxxxx! ” automatically rejects all 900 area code numbers from being dialed.
Interdigit Timer Master Override:
The long and short interdigit timers can be changed in the dial plan (affecting a specific line) by
preceding the entire plan with the following syntax:
Long interdigit timer: ‘ L ’ ‘ : ’ delay-value ‘ , ’
Short interdigit timer: ‘ S ’ ‘ : ’ delay-value ‘ , ’