Specifications

TD 92326GB
2009-03-10 / Ver. E
Installation and Operation Manual
VoIP Gateway
88
• STUN Server The STUN server name or IP address must be configured
if this device has no public IP address while the SIP
server is accessible under a public IP address. The value
is given by the SIP provider or administrator (for
example, stun.xten.com or 64.69.76.23). You can
choose any STUN server; it does not necessarily have to
correspond to the one of the SIP provider.
Authorization
• Username Username for authorization (only if different from the
registration ID).
• Password/Retype The password for authorization must be specified here
(Password) and confirmed (Retype).
Media Properties
The configuration of the media properties is evaluated for calls from/to this
interface to/from a physical (ISDN, analog, TEST, ...) only. See 19.1.5 Voice
Transmission on page 137 for more information.
• General Coder
Preferences
The coder preference (Coder, Framesize
a
, Silence
Compression
b
) to be used if a non-local media address
is detected. If the preference is marked as exclusive no
other coder is offered.
• Local Network Coder The coder preference Coder, Framesize
a
, Silence
Compression
b
) to be used if a local media address is
detected.
• Enable T.38 Enables T.38 fax protocol, see 21.13 Routes from and to
Fax Machines on page 150.
• Enable SRTP Enables encrypted media streams (SRTP). For perfect
privacy you must use encrypted signalling protocol (for
example SIPS) to hide exchange of SRTP keys
• Media-Relay If media relay is active for a call using this interface an
'exclusive' coder config is used to prohibit the use of
any other coder. This 'exclusive code media-relay' config
can be used to solve interop problems with other
equipment which does not support media
renegotiation, because with this config no media
renegotiation will be performed.
• No DTMF Detection DTMF tones are sent in-band through the media
channel but not as separate signalling messages.
• Enable PCM Enable the media to be connected using the local
timeslot switch if the call is between physical interfaces
of the same gateway.
SIP Interop Tweaks Miscellaneous interoperability options for SIP.
From Header: Applies to outgoing calls. Controls the
way the CGPN is transmitted to the SIP provider.
• Proposed Registration
Interval
Set in seconds, default it is 120 seconds
• Accept INVITE’s from
anywhere
By default, registered interfaces will reject INVITE's not
coming from the SIP server with "305 Use Proxy".