Patton FAX 2 port through SBC

[CJ Fig]

I have seen that others are able to connect successfully through their SBC but I am not able to. I can post the config file If anyone can take a look to see if I'm missing something. Thanks in advance.



#----------------------------------------------------------------#
# #
# SN4112S/JS/EUI #
# R6.10 2018-01-09 H323 SIP FXS FXO #
# 2018-11-29T21:19:34 #
# SN/00A0BA0EA9B4 #
# Generated configuration file #
# #
#----------------------------------------------------------------#

cli version 3.20
clock local default-offset +00:00
timer CONFIG_UPDATE now + 2 minutes every 10 minutes "provisioning execute CONFIG"
webserver port 80 language en
sntp-client
sntp-client server primary pool.ntp.org port 123 version 4

system

ic voice 0

profile ppp default

profile call-progress-tone defaultDialtone
play 1 1000 350 -13 440 -13

profile call-progress-tone defaultAlertingtone
play 1 1000 440 -19 480 -19
pause 2 3000

profile call-progress-tone defaultBusytone
play 1 500 480 -24 620 -24
pause 2 500

profile call-progress-tone defaultReleasetone
play 1 250 480 -24 620 -24
pause 2 250

profile call-progress-tone defaultCongestiontone
play 1 250 480 -24 620 -24
pause 2 250

profile tone-set default

profile voip default
codec 1 g711alaw64k rx-length 20 tx-length 20
codec 2 g711ulaw64k rx-length 20 tx-length 20
codec 3 g729 rx-length 20 tx-length 20
ced net-side-detection re-negotiation
fax transmission 1 relay t38-udp
fax redundancy low-speed 2 high-speed 1

profile pstn default

profile ringing-cadence default
play 1 1000
pause 2 4000

profile sip default
no autonomous-transitioning

profile aaa default
method 1 local
method 2 none

profile provisioning CONFIG
destination configuration
location 1 tftp://$(dhcp.66)/${system.mac}
activation reload graceful

context ip router

interface IF_IP_WAN
ipaddress dhcp
tcp adjust-mss rx mtu
tcp adjust-mss tx mtu

interface IF_IP_LAN
ipaddress 10.0.6.188 255.255.255.0
tcp adjust-mss rx mtu
tcp adjust-mss tx mtu

context cs switch

routing-table called-e164 RT_DIGITCOLLECTION
route .T dest-interface IF_SIP MT_EXT_TO_NAME

routing-table called-e164 RT_TO_FXS
route 881 dest-interface IF_FXS_00

mapping-table calling-e164 to calling-name MT_EXT_TO_NAME
map 881 to " "

interface sip IF_SIP
bind context sip-gateway GW_SIP_ALL_EXTENSIONS
route call dest-table RT_TO_FXS
remote 10.0.6.251 5060
local 10.0.6.251 5060
trust remote

interface fxs IF_FXS_00
route call dest-table RT_DIGITCOLLECTION
caller-id-format bell
subscriber-number 881

interface fxs IF_FXS_01
route call dest-table RT_DIGITCOLLECTION
caller-id-format bell

context cs switch
no shutdown

authentication-service AS_ALL_EXTENSIONS
realm 1 3CXPhoneSystem
username 881 password xjKm9gL5AmKG0VrVB4g9+Q== encrypted
username password

location-service LS_ALL_LINES
domain 1 10.0.6.251 5060

identity-group default

authentication outbound
authenticate 1 authentication-service AS_ALL_EXTENSIONS

registration outbound
registrar 10.0.6.251 5060
lifetime 300
register auto
retry-timeout on-system-error 10
retry-timeout on-client-error 10
retry-timeout on-server-error 10

identity 881 inherits default
alias expression 881

authentication outbound
authenticate 1 authentication-service AS_ALL_EXTENSIONS username 881

context sip-gateway GW_SIP_ALL_EXTENSIONS

interface LAN
bind interface IF_IP_LAN context router port 5060

context sip-gateway GW_SIP_ALL_EXTENSIONS
bind location-service LS_ALL_LINES
no shutdown

port ethernet 0 0
medium auto
encapsulation ip
bind interface IF_IP_LAN router
no shutdown

port fxs 0 0
use profile fxs us
encapsulation cc-fxs
bind interface IF_FXS_00 switch
no shutdown

port fxs 0 1
use profile fxs us
encapsulation cc-fxs
bind interface IF_FXS_01 switch
no shutdown

 

[CJ Fig]

I did not think that 3CX would allow the use of a fax extension outside the local LAN (including SBC) unless using VPN, in which case the PBX would be unaware that it is not local.

There are lots of non supported scenario's that work with the SBC.
For example, we use Cisco ATA's to connect to fax extensions using the SBC.
Also we are using SBC to connect other limited supported phones such has Polycom VVX series.

 

[leejor]

I know that many things do work even though they are not "officially" supported, it's easier to say "that's not supported", rather than spending (what could be) a lot of time trying to get it working". I had not attempted a 3CX Fax extension through an SBC myself, and everything I had been reading (others experience) suggested that it would not work (in that you could not even create the extension, unless local), over an SBC, let alone STUN.

 

[cobaltit]

Also we are using SBC to connect other limited supported phones such has Polycom VVX series.

This is a supported scenario.

 

[eddv123]

Not sure what the microfilter is.

A fax machine uses the same frequencies that an analog telephone uses, so it should be connected in exactly the same way: behind the splitter.

http://bt.custhelp.com/app/answers/detail/a_id/12227/~/bt-microfilter

 

[leejor]

If you are using a DSL filter, then that infers that any analogue device behind the filter is using the phone line (back to a providers line equipment in a centra office), that also provides the ADSL signal, not a 3CX extension