You'll want to learn all about Channels and groups. You can try here: http://www.voip-info.org/wiki/view/Channels+and+Groups
.
I've assumed that you have 4 FXO modules (to support 4 external phone lines) and 4 FXS modules (to support 4 local extensions).
Essentially you'll need
to define "group"s in your ZAPATA.CONF file. I've provided an
example below (it also includes call groups and pick up groups - I've
set it so that any group can pick up a call ringing for someone else)
You'll also need contexts in EXTENSIONS.CONF to control how your users dial. The entries in ZAPATA.CONF for the (FXS) extensions will invoke the appropriate context in EXTENSIONS.CONF so that the appropriate trunks are used. Check out the "Dialling a Group" section of http://www.voip-info.org/wiki/index.php?page=Asterisk+Zap+channels for information on the various ways you can have Asterisk select a trunk from a group. I've used r below - a round-robin search, starting at the next highest channel than last time (aka. ascending rotary hunt group).
Yours,
Hugh
Extensions.conf:
[globals]
BOSS_TRUNK=ZAP/r1
GROUPA_TRUNK=ZAP/r2
GROUPB_TRUNK=ZAP/r3
GROUPC_TRUNK=ZAP/r4
[boss-context]
;North American Long Distance
exten => _1XXXXXXXXXX,1,Dial(BOSS_TRUNK/${EXTEN})
[groupA-context]
;North American Long Distance
exten => _1XXXXXXXXXX,1,Dial(GROUPA_TRUNK/${EXTEN})
[groupB-context]
;North American Long Distance
exten => _1XXXXXXXXXX,1,Dial(GROUPB_TRUNK/${EXTEN})
[groupC-context]
;North American Long Distance
exten => _1XXXXXXXXXX,1,Dial(GROUPC_TRUNK/${EXTEN})
Zapata.conf:
;FXS Line 1 – The Boss's local extension
language=en
context= boss-context
signalling=fxo_ks
threewaycalling=yes
transfer=yes
callgroup=1
pickupgroup=1,2,3,4
channel=>1
;
;FXS Line 2 – Group A's local extension
language=en
context= groupA-context
signalling=fxo_ks
threewaycalling=yes
transfer=yes
callgroup=2
pickupgroup=1,2,3,4
channel=>1
;
;FXS Line 3 – Group B's local extension
language=en
context= groupB-context
signalling=fxo_ks
threewaycalling=yes
transfer=yes
callgroup=3
pickupgroup=1,2,3,4
channel=>1
;
;FXS Line 4 – Group C's local extension
language=en
context= groupC-context
signalling=fxo_ks
threewaycalling=yes
transfer=yes
callgroup=4
pickupgroup=1,2,3,4
channel=>1
;
;FXO (incoming) Line 1
language=en
context=Boss-FXO
signalling=fxs_ks
usecallerid=yes
echocancel=yes
echocancelwhenbridged=yes
transfer=yes
rxgain=5%
group=1
channel => 1
;
;FXO (incoming) Line 2
language=en
context=general-FXO
signalling=fxs_ks
usecallerid=yes
echocancel=yes
echocancelwhenbridged=yes
transfer=yes
rxgain=5%
group=2
channel => 1
;
;FXO (incoming) Line 3
language=en
context=general-FXO
signalling=fxs_ks
usecallerid=yes
echocancel=yes
echocancelwhenbridged=yes
transfer=yes
rxgain=5%
group=2,3
channel => 1
;
;FXO (incoming) Line 4
language=en
context=general-FXO
signalling=fxs_ks
usecallerid=yes
echocancel=yes
echocancelwhenbridged=yes
transfer=yes
rxgain=5%
group=2,3,4
channel => 1
Hello All !!!I have 4 PSTN lines in the PBX server 1,2,3,4.First line will be used by only one extension (i.e. for the boss) for incom ing and outgoing. This line is dedicated for him only.(The remaining lines will be shared by the employees1) Group A have access to lines 2 , 3 & 4.2) Group B have access to lines 3 & 43) Group C have access to line 4I want to know that how i will make that groups.I will be grateful for ur help.Thanks a lot.Faisal
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