Contents
From release tag 6005
- Various settings can now be set to all YateUCN type equipment at once from Node Params
We added the option to set the following Node Params for all the YateUCNs, respectively YateUCN5Gs equipment in the Network Settings:
- MME features for IMS support
- AMF features (only for YateUCN5G)
- CSFB/Combined attach options when Diameter support is enabled
MME features for IMS support
Network settings
In order to enable MME features on all YateUCN equipment go to:
- Network setting→ go to Node Params and select YateUCN/YateUCN5G Equipment type →MME features section
Equipment
For enabling MME features on a single equipment, edit directly from YateUCN in Equipments.
- From Equipment →select the YateUCN/YateUCN5G equipment to edit→ go to MME/SGSN →enable the options in the MME features that are required for your network.
From MME features, enable “Advertise IMS support” and all the options that fit the criteria you need.
- Advertise IMS support
- Advertise Extended Service Request support (advertise support of NAS Extended Service Request message; used for CSFB)
- Advertise ePCO support (dvertise support of NAS extended PCO IE)
- Advertise emergency bearer support (advertise support of emergency attach; this is recommended to be true in a production network that handles emergency calls, but false in testing environment or if the network is not yet interconnected for emergency service)
- CP-CIoT (Enable support of CIoT control plane data transfer – transfer of user data using NAS signalling instead of radio bearer/GTP-U)
- UP-CIoT (enable support of CIoT user plane optimization – suspend/resume S1 context instead of re-negotiating it when user is active)
- S1U data (advertise support for S1-U – regular, GTP-U – data transfer also when CIoT optimization is negotiated with UE)
JSON section
As node params, they will be sent to YateUCN/YateUCN5G configurations under the following JSON section: mme_sgsn
Alternative set-up: Extra params
Go to Network Settings→ from Extra params step → select YateUCN or YateUCN5G as Equipment type→ from this interface select “Custom” and write mme_features →Data type: string →comma separated values.
Possible values:
IMS-VoPS-session-in-S1-mode, extended-service-request-supported, extended-PCO-IE-supported, emergency-bearer-services-in-S1-mode, control-plane-CIoT-optimization-supported, user-plane-CIoT-optimization-supported, S1U-data-transfer-supported
Default values:
IMS-VoPS-session-in-S1-mode,extended-service-request-supported,extended-PCO-IE-supported,control-plane-CIoT-optimization-supported,user-plane-CIoT-optimization-supported,S1U-data-transfer-supported
(All except “emergency-bearer-services-in-S1-mode” since this is recommended to be true in a production network that handles emergency calls, but false in testing environment or if the network is not yet interconnected for emergency service)
The same settings can also be made individually on each equipment (Select an YateUCN/YateUCN5G type equipment → Edit equipment → go to add “Extra params“→ from this interface select “Custom” and write mme_features →Data type: string →value comma separated values.)

Select Equipment Type, Extra param and Data type

Insert the string value
AMF Features (YateUCN5G only)
Network settings
In order to enable AMF Features to Advertise IMS support on all YateUCN5G equipment go to:
- Network setting→ go to Node Params and select YateUCN5G Equipment type→enable the option in the AMF Features section
Equipment
For enabling AMF Features to Advertise IMS support on a single equipment, edit directly from the YateUCN5G in Equipments.
- From Equipment →select the YateUCN5G equipment to edit→ go to MME/SGSN →enable the options in the AMF Features section
Alternative set-up: Extra params
Go to Network Settings→ from Extra params step → select YateUCN5G as Equipment type→ from this interface select “Custom” and write amf_features→Data type: string →comma separated values.
As node params, they will be sent to YateUCN5G configurations under the following JSON section: amf
Possible value: IMS-VoPS-session-over-3gpp-access
Default value: IMS-VoPS-session-over-3gpp-access

Select Equipment Type, Extra param and Data type

Insert the string value
Combined attach options
Network settings
In order to enable Combined attach on all YateUCN equipment go to:
- Network setting→ go to Node Params and select YateUCN/YateUCN5G Equipment type →enable the options in the Combined attach options/CSFB section
Equipment
For enabling Combined attach on a single equipment, edit directly from YateUCN in Equipments.
- From Equipment →select the YateUCN/YateUCN5G equipment to edit→ go to MME/SGSN →enable the options in the Combined attach options/CSFB section
CSFB parameters set here will be configured for each UCN equipment with MME support active:
- Fake Combined (Pretend the CS attach from local MME to the local VLR succeeded even if it didn’t.)
- Fake CSFB (Pretend CSFB is available towards local MME even if local. VLR does not support it/is faked attached. When enabled, supports CSFB via MTRR though foreign network. The ‘Combined’ parameter needs to be true for this to be considered.)
- Fake CSFB no reg (Fake CSFB without sending an internal register. This parameter should be enabled if CS location update is not available in local VLR – MAP protocol is not available. This parameter is ignored if CSFB is not faked.)
- PLMN for CS combined attach (PLMN Identity for CS combined attach when routing fails. This is the PLMN identity with which the CS attach is done to the local VLR.
This parameter can also be set per equipment from the MME wizard step, in which case that value will be prioritized over the one set here.) - LAC for CS combined attach (Location Area Code for CS combined attach when routing fails. This is the LAC with which the CS attach is done to the local VLR.
Valid values 0 – 65533. This parameter can also be set per equipment from the MME wizard step, in which case that value will be prioritized over the one set here.)
Alternative set-up: Extra params
Go to Network Settings→ from Extra params step → select YateUCN or YateUCN5G as Equipment type→ from this interface select “Custom” and write each param as needed.
As node params, they will be sent to UCN/UCN5G configurations under the following JSON section: csfb
- fake_combined
- data type: bool
- default: true
- fake_csfb
- data type: bool
- default: true
- fake_csfb_no_reg
- data type: bool
- default: false
- cs_plmn
- data type: string
- default: ${MNC}${MCC} (taken from Network Settings first step)
- cs_lac
- data type: numeric
- default: 100
The same settings can also be made individually on each equipment (Select an YateUCN/YateUCN5G type equipment → Edit equipment → go to add “Extra params“→ from this interface select “Custom” and write each param as needed)