Contents
| 1 | Introduction |
| 1.1 | Purpose |
2 | General Impact |
| 2.1 | From vMRF 1.0 to vMRF 1.1 |
3 | Impact on vMRF Features |
| 3.1 | Impact on vMRF Features from vMRF 1.0 to vMRF 1.1 |
1 Introduction
The Network Impact Report (NIR) describes how the current release of Virtual Multimedia Resource Function (vMRF) with new and changed features affects the previous release of vMRF and the operator's overall network, including all affected products and functions.
1.1 Purpose
The purpose of this document is to provide sufficient information at an early stage to Ericsson system operators to help them plan the introduction of new products and upgrades to their networks.
This document is a living document and is subject to change during the development of the new release. Therefore, part of the information may be incomplete or unavailable until General Availability (GA) of the new vMRF release.
2 General Impact
2.1 From vMRF 1.0 to vMRF 1.1
2.1.1 Capacity and Performance
In vMRF 1.1 hyperthreading support has been introduced. When hyperthreading is in use, vMRF VMs are deployed by allocating two vCPUs per each physical CPU core. The use of hyperthreading increases the capacity of a single physical CPU core up to 20%. It is recommended to use hyperthreading, in which case only even VM flavor sizes are supported.
2.1.1.1 Subscriber Capacity
No impact.
2.1.1.2 Network Performance
No impact.
2.1.2 Hardware
No impact.
2.1.3 Implementation
The following port number changes are introduced in vMRF 1.1 due to alignment with other IMS nodes:
- Cluster internal network port is moved to eth0
- O&M port is moved to eth1
- Signaling port is moved to eth2
2.1.4 Interface
2.1.4.1 Inter-Node Interface
No impact.
2.1.4.2 Man-Machine Interface
No impact.
2.1.5 Memory
No impact.
2.1.6 Operation
In vMRF 1.1 the following new alarms have been introduced:
In vMRF 1.1 the following alarms have been converted into events:
2.1.7 Obsolete Features
No impact.
2.1.8 Other Network Elements
2.1.8.1 General
The lowest interoperable releases for vMRF 1.1 are described in Table 1.
|
15B | |
|
vMTAS |
16A |
|
OSS-RC |
17B |
2.1.8.2 Multimedia Telephony Application Server (MTAS)
vMRF 1.1 is compatible with the following MTAS releases: 4.1, 4.2, 4.3, and 4.4.
2.1.8.3 Virtual Multimedia Telephony Application Server (vMTAS)
vMRF 1.1 is compatible with the following vMTAS release: 16A.
2.1.8.4 OSS-RC
vMRF 1.1 is compatible with the following OSS-RC release: 17B.
2.1.9 Other Impacts
No impact.
2.1.10 Additional Information
No impact.
3 Impact on vMRF Features
3.1 Impact on vMRF Features from vMRF 1.0 to vMRF 1.1
3.1.1 Media Stream Processing Enhancements
3.1.1.1 Description
In vMRF 1.1 the G.722 audio codec has been introduced. The G.722 codec operates at a sampling rate of 16 kHz and offers audio bandwidth ranging from 50 Hz up to 7 kHz. The G.722 codec supports Packet Loss Concealment (PLC).
In vMRF 1.1 adaptive jitter service has been introduced. In the beginning of the call the jitter buffer size is always the configured initial jitter buffer size, but during the call the jitter buffer size adapts to the measured jitter. Static jitter service is not supported in vMRF 1.1.
3.1.2 Troubleshooting Enhancements
3.1.2.1 Description
In vMRF 1.1 the h.248 error codes are now expanded with descriptive text strings.
In vMRF 1.1 hanging termination notification towards the controlling server has been introduced.