top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

volte call failed with Unknown NAS message

+1 vote
435 views

Hello there,
Please let me know what is Unknown NAS ? for below case!

enter image description here

posted Mar 19, 2019 by Sivakumar.d

Looking for an answer?  Promote on:
Facebook Share Button Twitter Share Button LinkedIn Share Button

Similar Questions
0 votes
VoLTE: How does voice call establish when one party using VoLTE technology and the other one using 2G ?

Is there any node in the network which makes bridge between VoLTE and 2G system to serve voice call between two users ?

0 votes
How the preemption works in volte network?

For each bearer in volte there are QCI and ARP parameters, for example default bearer qci 9 arp value, qci 5 arp value, qci 1 arp value, and the ARP has the PCI and PVI parameters too.

So in volte network if we need to have a VIP user how will be the mapping between QCI and ARP values?
And this ARP values need to be configured in the Hss for the user and also in the PCRF?

+1 vote
VoLTE in LBO: Number translation

In the TR 23.749 (Study on S8HR Architecture for VoLTE), it is mentioned that in LBO integration, calls to non routable local numbers such as local Short-code, 1800XXX services are translated by the VPLMN.

How the translation is done in VPLMN. Is it performed by the P-CSCF?

+1 vote
Can we establish VOLTE call in Scell?

If Pcell VOLTE capacity is full, Can we establish the VOLTE call in Scell?

...