[asterisk-ss7] Looking for advice in CIC numbering for E1 upgrade

[Luis Marcelo]

Hey guys,
I wanted to get some advice for an upgrade we have in mind:
Scenario: We have 1 server with 2xA104d Sangoma cards (8E1s total) Our
setup has 1 sig chan per card (chans 16 and 140) . Right now we rarely use
more than 3 E1s but we are expecting a major traffic increase in the
following days so we got ourselves another server with identical hardware.

these are the config files:

*system.conf:*

loadzone=us
defaultzone=us

#Sangoma A104 port 1 [slot:1 bus:13 span:1] <wanpipe1>
span=1,1,0,ccs,hdb3
bchan=1-15,17-31
mtp2=16

#Sangoma A104 port 2 [slot:1 bus:13 span:2] <wanpipe2>
span=2,2,0,ccs,hdb3
bchan=32-62

#Sangoma A104 port 3 [slot:1 bus:13 span:3] <wanpipe3>
span=3,3,0,ccs,hdb3
bchan=63-93

#Sangoma A104 port 4 [slot:1 bus:13 span:4] <wanpipe4>
span=4,4,0,ccs,hdb3
bchan=94-124

#Sangoma A104 port 1 [slot:4 bus:15 span:5] <wanpipe5>
span=5,5,0,ccs,hdb3
bchan=125-139,141-155
mtp2=140

#Sangoma A104 port 2 [slot:4 bus:15 span:6] <wanpipe6>
span=6,6,0,ccs,hdb3
bchan=156-186

#Sangoma A104 port 3 [slot:4 bus:15 span:7] <wanpipe7>
span=7,7,0,ccs,hdb3
bchan=187-217

#Sangoma A104 port 4 [slot:4 bus:15 span:8] <wanpipe8>
span=8,8,0,ccs,hdb3
bchan=218-248

*chan_dahdi.conf:*

[trunkgroups]

[channels]
context=ctx1
language=en
usecallerid=yes
hidecallerid=no
callwaiting=yes
usecallingpres=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
canpark=yes
cancallforward=yes
callreturn=yes
relaxdtmf=yes
rxgain=0.0
txgain=0.0
group=1
callgroup=1
pickupgroup=1
immediate=no

networkindicator=National
ss7_called_nai=National ;dynamic
ss7_calling_nai=National ;dynamic
ss7_internationalprefix =
ss7_nationalprefix =
signalling = ss7
ss7type = itu
linkset = 1
pointcode = 200
adjpointcode = 300
defaultdpc = 300
slc=0

;Sangoma A104 port 1 [slot:1 bus:13 span:1] <wanpipe1>
cicbeginswith = 1
channel => 1-15
cicbeginswith = 17
channel => 17-31
sigchan = 16

;Sangoma A104 port 2 [slot:1 bus:13 span:2] <wanpipe2>
cicbeginswith = 33
channel => 32-62

;Sangoma A104 port 3 [slot:1 bus:13 span:3] <wanpipe3>
cicbeginswith = 65
channel => 63-93

;Sangoma A104 port 4 [slot:1 bus:13 span:4] <wanpipe4>
cicbeginswith = 97
channel => 94-124

 ;Sangoma A104 port 1 [slot:4 bus:15 span:5] <wanpipe5>
cicbeginswith = 129
channel => 125-139
cicbeginswith = 145
channel => 141-155
sigchan = 140

;Sangoma A104 port 2 [slot:4 bus:15 span:6] <wanpipe6>
cicbeginswith = 161
channel => 156-186

;Sangoma A104 port 3 [slot:4 bus:15 span:7] <wanpipe7>
cicbeginswith = 193
channel => 187-217

;Sangoma A104 port 4 [slot:4 bus:15 span:8] <wanpipe8>
cicbeginswith = 225
channel => 218-248

Now, two questions:

1. It seems to me that I should configure the 2nd server almost identical
to the first except the CIC numbering, wich should now start a CIC 249,
Something like this:

;span1
cicbeginswith = 249
channel => 1-15
cicbeginswith = 265
channel => 17-31
sigchan = 16

;span2
cicbeginswith = 281
channel => 32-62

;span3
cicbeginswith = 313
channel => 63-93

;span4
cicbeginswith = 345
channel => 94-124

;span5
cicbeginswith = 377
channel => 125-139
cicbeginswith = 393
channel => 141-155
sigchan = 140

;span6
cicbeginswith = 409
channel => 156-186

;span7
cicbeginswith = 441
channel => 187-217

;span8
cicbeginswith = 473
channel => 218-248

is this correct?

2. Would it be at all possible for both servers to handle half the traffic
at all times? (right now the switch assigns the first call to CIC 248, the
2nd to 247 an so on) should we assign say CIC 248 to server 1 and 247 to
server2?

I'm using Asterisk1.6.0.20, dahdi 2.5.0.2 and libss7-1.0.2
Also the sangoma drivers are Wanpipe 3.5.24

thanks in advance!
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