Configuration

Here are some sample configurations for popular VoIP applications and hardware. Some systems will only take the IP address rather a domain in this case use the IP provided when you ping the domain of choice. Take note lax.tollfreetollfree.com can be replaced with dal.tollfreetollfree.com if applicable.

Asterisk

[toll-free]
exten => _1800NXXXXXX,1,Dial(SIP/${EXTEN}@lax.tollfreetollfree.com)
exten => _1888NXXXXXX,1,Dial(SIP/${EXTEN}@lax.tollfreetollfree.com)
exten => _1877NXXXXXX,1,Dial(SIP/${EXTEN}@lax.tollfreetollfree.com)
exten => _1866NXXXXXX,1,Dial(SIP/${EXTEN}@lax.tollfreetollfree.com)
exten => _1855NXXXXXX,1,Dial(SIP/${EXTEN}@lax.tollfreetollfree.com)
exten => _1844NXXXXXX,1,Dial(SIP/${EXTEN}@lax.tollfreetollfree.com)
exten => _1833NXXXXXX,1,Dial(SIP/${EXTEN}@lax.tollfreetollfree.com)

Cisco IOS

dial-peer voice 20 voip
 description tollfreetollfree.com
 destination-pattern 18[00,33,44,55,66,77,88][2-9]......
 session protocol sipv2
 session target dns:lax.tollfreetollfree.com
 dtmf-relay rtp-nte
 ip precedence 5

FreeSWITCH

<extension name="tollfree">
<condition field="destination_number" expression="^(\+1|1)?(8(00|88|77|66|55|44|33)[2-9]\d{6})$">
<action application="bridge" data="sofia/default/1$
2@lax.tollfreetollfree.com"/>
</condition>
</extension>

Yate

^(\+1|1)?(8(00|88|77|66|55|44|33)[2-9]\d{6})$=sip/sip:\0@lax.tollfreetollfree.com