3Com VCX v7111 User Manual page 156
Voip
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Also See for VCX v7111:
- User manual (245 pages) ,
- Installation manual (58 pages) ,
- Product manual (15 pages)
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ini File Parameter Name
PhoneContext
EnableRport
156
Valid Range and Description
Defines the Phone Context table.
When a call is received from the ISDN, the NPI and TON are
compared against the table, and the Phone-Context value is used
in the outgoing SIP INVITE message. The same mapping occurs
when an INVITE with a Phone-Context attribute is received. The
Phone-Context parameter appears in the standard SIP headers
where a phone number is used (Request-URI, To, From,
Diversion).
PhoneContext = <Number Plan>,<Number Type>,<Phone-
Context>
For example:
PhoneContext = 0,0,unknown.com
PhoneContext = 1,1,host.com
PhoneContext = 9,1,na.e164.host.com
This parameter can appear up to 20 times.
Several rows with the same NPI-TON or Phone-Context
are allowed. In this scenario, a Tel-to-IP call uses the first
match.
Phone-Context '+' is a unique case as it doesn't appear in
the Request-URI as a Phone-Context parameter. Instead,
it is added as a prefix to the phone number. The '+' isn't
removed from the phone number in the IP-to-Tel
direction.
To configure Phone Context table using the Web
interface, see
Mapping NPI/TON to
Enables / disables the usage of the 'rport' parameter in the Via
header.
[0] = Enabled.
[1] = Disabled (default).
The gateway adds an 'rport' parameter to the Via header field of
each outgoing SIP message. The first Proxy that receives this
message sets the 'rport' value of the response to the actual port
from which the request was received. This method is used, for
example, to enable the gateway to identify its port mapping
outside a NAT.
If the Via doesn't include 'rport' tag, the destination port of the
response will be taken from the host part of the VIA.
If the Via includes 'rport' tag with no port value, the destination port
of the response will be the source port of the incoming request.
If the Via includes 'rport' tag with a port value (rport=1001), the
destination port of the response will be the port indicated in the
'rport' tag.
®
3Com
VCX V7111 VoIP Gateway User Guide
Phone-Context.
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