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 of 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:

SettingValue
NameUnique Name, such as Webex
DescriptionMeaningful description, such as Webex SIP Trunk Security Profile
Incoming PortNeeds 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:

SettingValue
NameUnique Name, such as Webex
DescriptionMeaningful 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:

SettingValue
NameUnique Name, such as Webex
DescriptionMeaningful 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:

SettingValue
Device Information
DeviceNameA unique name, such as Webex
DescriptionMeaningful description, such as Webex SIP Trunk
Run On All Active Unified CM NodesChecked
Inbound Calls
Calling Search SpaceThe 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 AddressIP address of the Local Gateway CUBE
Destination Port5060
SIP Trunk Security ProfilePreviously defined: Webex
SIP ProfilePreviously defined: Webex

Configure Route Group for Webex

Create a route group with the following settings:

SettingValue
Route Group Information
Route Group NameA unique name, such as Webex
Selected DevicesThe previously configured SIP trunk: Webex

Configure Route List for Webex

Create a route list with the following settings:

SettingValue
Route List Information
NameA unique name, such as RL_Webex
DescriptionMeaningful description, such as Route list for Webex
Run On All Active Unified CM NodesChecked
Route List Member Information
Selected GroupsOnly the previously defined route group: Webex

Create a Partition for Webex Destinations

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

SettingValue
Route List Information
NameUnique name, such as Webex
DescriptionMeaningful 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:

SettingValue
Route PatternFull +E.164 pattern for the DID range in Webex with the leading “\”. For example: \+140855501XX
Route PartitionWebex
Gateway/Route ListRL_Webex
Urgent PriorityChecked

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:

SettingValue
Translation PatternESN pattern for the ESN range in Webex. For example: 80121XX
PartitionWebex
DescriptionMeaningful description, such as Webex Normalization Pattern
Use Originator's Calling Search SpaceChecked
Urgent PriorityChecked
Do Not Wait For Interdigit Timeout On Subsequent HopsChecked
Called Party Transformation MaskMask to normalize the number to +E.164. For example: +140855501XX