Configure SIP Trunk Security Profile for Trunk to Local Gateway

In cases where Local Gateway and PSTN gateway reside on the same device, Unified CM must be enabled to differentiate between two different traffic types (calls from Webex and from the PSTN) that are originating from the same device and apply differentiated class for service to these call types. This differentiated call treatment is achieved by provisioning two trunks between Unified CM and the combined local gateway and PSTN gateway device which requires different SIP listening ports for the two trunks.

Create a dedicated SIP Trunk Security Profile for the Local Gateway trunk with the following settings:

Setting Value
Name Unique Name, such as Webex
Description Meaningful description, such as Webex SIP Trunk Security Profile
Incoming Port Needs to match port used in local gateway config for traffic to/from Webex: 5065

Configure SIP Profile for the Local Gateway Trunk

Create a dedicated SIP Profile for the Local Gateway trunk with the following settings:

Setting Value
Name Unique Name, such as Webex
Description Meaningful description, such as Webex SIP Profile
Enable OPTIONS Ping to monitor destination status for Trunks with Service Type “None (Default)” Checked

Create a Calling Search Space for Calls From Webex

Create a calling search space for calls originating from Webex with the following settings:

Setting Value
Name Unique Name, such as Webex
Description Meaningful description, such as Webex Calling Search Space
Selected Partitions

DN (+E.164 directory numbers)

ESN (abbreviated inter-site dialling)

PSTNInternational (PSTN access)

onNetRemote (GDPR learned destinations)


 

The last partition onNetRemote is only used in a multi-cluster environment where routing information is exchanged between Unified CM clusters using Intercluster Lookup Service (ILS) or Global Dialplan Replication (GDPR).

Configure a SIP Trunk To and From Webex

Create a SIP trunk for the calls to and from Webex via the Local Gateway with the following settings:

Setting Value
Device Information
DeviceName A unique name, such as Webex
Description Meaningful description, such as Webex SIP Trunk
Run On All Active Unified CM Nodes Checked
Inbound Calls
Calling Search Space The previously defined calling search space: Webex
AAR Calling Search Space A calling search space with only access to PSTN route patterns: PSTNReroute
SIP Information
Destination Address IP address of the Local Gateway CUBE
Destination Port 5060
SIP Trunk Security Profile Previously defined: Webex
SIP Profile Previously defined: Webex

Configure Route Group for Webex

Create a route group with the following settings:

Setting Value
Route Group Information
Route Group Name A unique name, such as Webex
Selected Devices The previously configured SIP trunk: Webex

Configure Route List for Webex

Create a route list with the following settings:

Setting Value
Route List Information
Name A unique name, such as RL_Webex
Description Meaningful description, such as Route list for Webex
Run On All Active Unified CM Nodes Checked
Route List Member Information
Selected Groups Only the previously defined route group: Webex

Create a Partition for Webex Destinations

Create a partition for the Webex destinations with the following settings:

Setting Value
Route List Information
Name Unique name, such as Webex
Description Meaningful description, such as Webex Partition

What to do next

Make sure to add this partition to all calling search spaces that should have access to Webex destinations. You must add this partition specifically to the calling search space that is used as the inbound calling search space on PSTN trunks, so that calls from the PSTN to Webex can be routed.

Configure Route Patterns for Webex Destinations

Configure route patterns for each DID range on Webex with the following settings:

Setting Value
Route Pattern Full +E.164 pattern for the DID range in Webex with the leading “\”. For example: \+140855501XX
Route Partition Webex
Gateway/Route List RL_Webex
Urgent Priority Checked

Configure Abbreviated Intersite Dialing Normalization for Webex

If abbreviated inter-site dialing is required to Webex, then configure dialing normalization patterns for each ESN range on Webex with the following settings:

Setting Value
Translation Pattern ESN pattern for the ESN range in Webex. For example: 80121XX
Partition Webex
Description Meaningful description, such as Webex Normalization Pattern
Use Originator's Calling Search Space Checked
Urgent Priority Checked
Do Not Wait For Interdigit Timeout On Subsequent Hops Checked
Called Party Transformation Mask Mask to normalize the number to +E.164. For example: +140855501XX