Config attributes
Default
Value
Type
Values
Description
subscriptions when transferring calls. The option is disabled by default. (See
IETF RFC 4488.)
voip.allow-strict
0
BOOLEAN
0="False"
1="True"
By default, proxies specified for SIP registration will be configured as loose-
routing proxies. The loose-routing designation will be automatically
appended to each proxy address when the proxy is added to the SIP Route
header. Older proxies may be strict-routing (see IETF RFC 2543), not
supporting loose routing (see IETF RFC 3261). Enable this option if you are
using strict-routing proxies. If this option is enabled and you are specifying
one or more loose-routing proxies in the Proxy field, then you must
manually add the suffix to each loose-routing proxy address. For example,
“
10.134.123.101
;lr”
.
voip.min-size
0
BOOLEAN
0="False"
1="True"
The SIP protocol specifies that header field names can be in the full name
form or in the abbreviated form. Abbreviated form is useful when messages
might be too large to be carried on the available transport, for example
when exceeding UDP's Maximum Transmission Unit (MTU). Enable this
option to encode SIP headers in their short forms to reduce size. By default,
the option is not enabled and SIP headers in outgoing messages will be
encoded in their full names. (See SIP protocol standard, IETF RFC 3261.)
voip.dtmf-method
0
INDEXED_
OPTION
0="RTP
(RFC2833)"
1="SIP INFO"
2="Inband"
Select the signaling method for transmitting DTMF tones, either via RTP
(RFC2833), SIP INFO messages, or in-band.
voip.dtmf-rtp-
payload-type
96
NUMBER
96 - 127
Specify the payload type for DTMF RTP signaling.
voip.media-onhold-
method
0
INDEXED_
OPTION
0="M line only
(RFC3264)"
1="M and C line
(RFC2543)"
The Media on hold method setting allows switching the Media on Hold
behavior between the different RFC definitions. 'M line only (RFC3264)'
implements the functionality according to RFC3264. In the INVITE message
SDP body, the attribute 'a=sendonly' is set to a designated media stream to
put media on-hold. 'M and C line (RFC2543)' implements the functionality
according to RFC2543. In the INVITE message SDP body, the connection line
ip is set to '0.0.0.0' (e.g. 'c= IN IP4 0.0.0.0'), and the attribute 'a=inactive' is