Trunk Parameters
Descriptions for parameters in exported and imported Trunk CSV file.
Parameter | Description | Importance | Restriction | Default Value |
---|---|---|---|---|
Name | The trunk name. | Required | The maximum character length is 63. Space and special characters are not allowed. Trunk's name cannot be duplicated. |
N/A |
Trunk Status | Whether to enable or disable the trunk. | Required | Permitted value:
Note: Trunk Status will be filled with
default value 1 if you leave this field
empty.
|
1 |
Trunk Type | Trunk type. | Required | Permitted value:
Note:
|
register |
Transport | The transport protocol that is provided by the ITSP. | Required | Permitted value:
udp, tcp,
tls, or
dnsnaptr. Note: Transport will be filled with
default value udp if you leave these fields
empty. |
udp |
Hostname/IP | The IP address or the domain of the ITSP. | Required | The maximum character length is 255. | N/A |
Port | The trunk port. | Required | Only numbers between 0 and 65535 are allowed. | N/A |
Domain | The domain in SIP URI of a specific header like From, To header. Note: If the domain is not provided by
ITSP, enter the same value as
Hostname/IP.
|
Required | The maximum character length is 255. | N/A |
Username | The username to register to the ITSP. | Required if Trunk Type = register | The maximum character length is 255. | N/A |
Password | The password that is associated with the username. | Required if Trunk Type = register | The maximum character length is 255. | N/A |
Authentication Name | The authentication name to register to the ITSP. | Optional | The maximum character length is 255. | N/A |
Enable Outbound Proxy | Whether to enable or disable outbound proxy. | Required if Trunk Type = register | Permitted value:
Note: Enable Outbound Proxy will be
filled with default value 0 if you leave
this field empty.
|
0 |
Outbound Proxy Server | The address of outbound proxy server. | Required if Enable Outbound Proxy = 1 | The maximum character length is 255. | N/A |
Port of Outbound Proxy Server | The port of outbound proxy server. | Required if Enable Outbound Proxy = 1 | Only numbers between 1 and 65535 are allowed. | N/A |
Codec Setting | The audio codec for trunk. | Required | Permitted value: ulaw,
alaw, g729,
gsm, h264,
h263, h263p,
ilbc, g722,
g726, speex,
adpcm, vp8, or
mpeg4, For multiple Codec, please enter values in order and use & as a separator, e.g. first_value1&second_value2. Note: If the value you enter
is not permitted, Codec Setting will be
skipped. |
ulaw&alaw&gsm&h264&ilbc&g722&g726&g729 |
DTMF Mode | The default mode for sending DTMF tones. | Required | Permitted value: rfc4733,
info, inband, or
auto. Note: DTMF Mode
will be filled with default value rfc4733 if
you leave this field empty. |
rfc4733 |
DTMF FMTP | The value of the DTMF fmtp attribute when the DTMF mode is rfc4733. | Optional | Permitted value: 0-16,
0-15. Note: This field
will be filled with default value 0-16 if you
leave this field empty. |
0-16 |
Qualify | Whether to send SIP OPTION packet to check if the SIP device is up. | Required | Permitted value:
Note: Qualify will be filled with default
value 1 if you leave this field
empty.
|
1 |
Enable SRTP | Whether to enable or disable SRTP (encrypted RTP) for the trunk. | Required | Permitted value:
Note: Enable SRTP will be filled with
default value 0 if you leave this field
empty.
|
0 |
T.38 Support | Whether to enable or disable T.38 fax. | Required | Permitted value:
Note: T.38 Support will be filled with
default value 0 if you leave this field
empty.
|
0 |
Inband Progress | Whether to enable or disable inband progress. | Required | Permitted value:
Note: Inband Progress will be filled with
default value 0 if you leave this field
empty.
|
0 |
Ignore 183 Message without SDP | Whether to ignore 183 messages without SDP. | Required | Permitted value:
Note: Ignore 183 Message
without SDP will be filled with default
value 0 if you leave this field
empty.
|
0 |
Enable RTP Keep-alive | Whether to enable or disable RTP keep-alive. | Optional | Permitted value:
Note: Enable RTP
Keep-alive will be filled with default value
0 if you leave this field
empty. |
0 |
Maximum Concurrent Calls | Specify the maximum number of concurrent calls allowed in the trunk. | Required | Only numbers are allowed. Specially, 0 means unlimited. The maximum character length is 5. Note: Maximum Concurrent Calls
will be filled with default value 0 if you
leave this field empty. |
0 |
Call Restriction Type | Specify based on which type of calls to define the maximum number of concurrent calls for this trunk. | Required | Permitted value: outbound or
all. Note: Call Restriction Type will be
filled with default value outbound if you
leave this field empty.
|
outbound |
Default Outbound Caller ID | The caller ID that is displayed on the callee's device. | Optional | Numbers, letters, and characters (
)
.
-
+
*
# are allowed. The maximum character length is
31. Note: The outbound caller ID should be supported by the
ITSP. |
N/A |
Default Outbound Caller ID Name | The caller ID name that is displayed on the callee's device. | Optional | The maximum character length is 127. | N/A |
Get Caller ID From | Decide from which header field will the trunk retrieve Caller ID. | Required | Permitted value:
Note: Get Caller ID From will be filled
with default value follow_system if you
leave this field empty.
|
follow_system |
Get DID From | Different devices or providers may contain DID numbers in
different SIP headers. When an inbound call through a SIP trunk
reaches the PBX, the PBX needs to retrieve a correct DID number, or
the call will fail. Adjust the setting after analysis of the SIP packets sent from the trunk provider. |
Required | Permitted value:
Note: Get DID From will be filled with
default value follow_system if you leave
this field empty.
|
follow_system |
From User Part | A From header contains caller ID and caller ID name. From User Part indicates caller ID. |
Required | Permitted value:
Note: From User Part will be filled with
default value default if you leave this
field empty.
|
default |
From Display Name Part | A From header contains caller ID and caller ID name. From Display Name Part indicates caller ID name. |
Required | Permitted value:
Note: From Display Name Part will be
filled with default value default if you
leave this field empty.
|
default |
Diversion | Define the parameters included in the Diversion SIP header. | Optional | Permitted value:
Note: Leave Diversion field empty means
[None]: do not send this parameter with SIP INVITE
packet.
|
N/A |
Remote-Party-ID | Define the parameters included in the Remote-Party-ID SIP header. | Optional | Permitted value:
Note: Leave Remote-Party-ID field empty
means [None]: do not send this parameter with SIP INVITE
packet.
|
N/A |
P-Asserted-Identity | Define the parameters included in the P-Asserted-Identity SIP header. | Optional | Permitted value:
Note: Leave P-Asserted-Identity field
empty means [None]: do not send this parameter with SIP
INVITE packet.
|
N/A |
P-Preferred-Identity | Define the parameters included in the P-Preferred-Identity SIP header. | Optional | Permitted value:
Note: Leave P-Preferred-Identity field
empty means [None]: do not send this parameter with SIP
INVITE packet.
|
N/A |
From Host Part | Define the domain or IP address to be used in the From field of a SIP INVITE header. | Required | Note: This parameter is only required for
Peer Trunks.
|
default |
To Host Part | Define the domain or IP address to be used in the To field of a SIP INVITE header. | Required | Note: This parameter is only required for
Peer Trunks.
|
default |
User Agent | If the ITSP requires User Agent for authentication, enter the User Agent information that is provided by the ITSP. | Optional | The maximum character length is 255. | N/A |
Realm | Realm is a string displayed to users so they know which username and password to use. | Optional | The maximum character length is 255. | N/A |
Send Privacy ID | Whether to send the Privacy ID in SIP header or not. | Required | Permitted value:
|
0 |
User Phone | Whether to add the parameter user=phone as a
request line in the header field of the SIP INVITE packet. |
Required | Permitted value:
|
0 |
100rel | Configure 100rel for this trunk. | Required | Permitted value:
|
Disabled |
Maxptime | Select the value of the Maxptime used when the PBX sends the INVITE packet. | Required | Permitted value:
Note: Maxptime will be filled with
default value default if you leave this
field empty.
|
default |
Support P-Early-Media | Set whether the P-Early-Media field is included in the INVITE packet. | Required | Permitted value:
|
0 |