From release tag 6005
- Combined attach can now be configured directly from YateMMI interface
Combined attach options
For multiple YateUCN that have the IMS configured, Combined attach can be enabled on all of YateUCN machines from Network Setting.
- From Network setting→ go to Node Params and select YateUCN/YateUCN5G Equipment type.
Or for enabling Combined attach them 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
- 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.
- Pretend CSFB is available towards local MME even if local. VLR does not support it/is faked attached.
- 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.
- 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.
- 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.
- 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.
Notes: In the JSON we can check all the Combined attach options as written below:
- fake_combined;
- fake_csfb;
- fake_csfb_no_reg;
- mme_features;
- cs_plmn
- cs_lac
