# Trunk A **Trunk** is a link to another system, such as a phone carrier, pbx, etc, to send and receive calls. A **Trunk** will need a **[Trunk Handler](https://public.intellasoft.net/books/cli/page/trunk-handler)** defined beforehand to function properly. # Adding a Trunk 1\) Enter the CLI's configuration mode 2\) Ensure you have already made a **[Trunk Handler](https://public.intellasoft.net/books/cli/page/trunk-handler)**, while you can create a **Trunk** without defining one, you will still need to define one to ensure that the phone system is properly configured. 3\) Enter the name of the **Trunk** you wish to create. You will be prompted with the minimum required settings ``` vbox-markm(config)# trunk building_a !! Notice: Editing new item: building_a !! Notice: Minimum requirements needed for insert: !! device_type !! desc !! capacity vbox-markm(config-trunk building_a)# ```

4\) Enter the minimum required settings for adding the **Trunk**, you can use the **"?" key** to get a description of all the available settings. ``` vbox-markm(config-trunk building_a)# capacity 50 vbox-markm(config-trunk building_a)# desc "Main building" vbox-markm(config-trunk building_a)# device_type SIP IAX2 DAHDI VIRTUAL SIP-VIRTUAL ### Used tab to get a list of the available devices. vbox-markm(config-trunk building_a)# device_type SIP ```

5\) After adding the trunk, use the **show** command to ensure your settings have been saved. ``` vbox-markm(config-trunk building_a)# show ! Generating running-config !!!! ! -------------- Trunks ---------------- trunk building_a capacity 50 desc "Main building" device_type SIP prestart_media no record no trunk_handler_name default sip allow ulaw,alaw,adpcm,gsm call-limit 50 canreinvite no disallow g723,slin,ilbc,lpc10,g729,speex,g726aal2,g722 host dynamic nat yes qualify yes rtpholdtimeout 60 rtptimeout 60 secret 9a97c729fdce1f0a5d68495f82c5159e sendrpid yes trustrpid no username building_a exit exit exit vbox-markm(config-trunk building_a)# ```

6\) Next define a **[Trunk Handler](https://public.intellasoft.net/books/cli/page/trunk-handler)** that the **Trunk** will use.

`vbox-markm(config-trunk building_a)# trunk_handler_name`
`audiocodes                local_loop                pstn                      nycvoip`
`branch                    nbs-``9734067200` `default` `localyny`
`chvoip                    Nathans_Test_TrunkHandler`
`vbox-markm(config-trunk building_a)# trunk_handler_name Nathans_Test_TrunkHandler`

7\) Lastly, do a **show** command to ensure your settings are saved. ``` vbox-markm(config-trunk building_a)# show ! Generating running-config !!!! ! -------------- Trunks ---------------- trunk building_a capacity 50 desc "Main building" device_type SIP prestart_media no record no trunk_handler_name Nathans_Test_TrunkHandler sip allow ulaw,alaw,adpcm,gsm call-limit 50 canreinvite no disallow g723,slin,ilbc,lpc10,g729,speex,g726aal2,g722 host dynamic nat yes qualify yes rtpholdtimeout 60 rtptimeout 60 secret 9a97c729fdce1f0a5d68495f82c5159e sendrpid yes trustrpid no username building_a exit exit exit vbox-markm(config-trunk building_a)# ```

# Trunk Settings Description You can also use the "**?**" key to view the description while in the CLI. \* indicates a required setting.

callerid\_name	Force this callerid name when receiving calls from this trunk
callerid\_number	Force this callerid number when receiving calls from this trunk
capacity	(\*) Maximum number of concurrent calls to/from this trunk
desc	(\*) Non-functional description
device\_type	(\*) Protocol that this device will use
do	To run exec commands in config mode
exit	Exit from this level (with notification of incomplete config)
iax	Change IAX-specific trunk settings
incoming\_context\_label
no	Clear settings
prestart\_media
record	Whether to record all calls to/from this device
show	Show the running-config for the current item
sip	Change SIP-specific trunk settings
trunk\_handler\_name	Name of the trunkhandler to use for incoming call processing