The document outlines the transition to next generation networks (NGN) focusing on migration from traditional systems to IP-based solutions, emphasizing the benefits of unified communications and SIP trunking. It discusses considerations for planning the migration, including the choice between hosted/cloud PBX and in-house systems, as well as the importance of quality of service and training for end users. The soft migration method is suggested for gradual implementation, with parallel operation of old and new systems during the transition.

2. Your Hosts
Markus Ehlers Raiko Schulz

3. Agenda
•What are Next Generation Networks?
•No analog lines? No ISDN? What now?
•Planning the migration
•Soft Migration
•Questions?

4. •Also known as All-IP
•Unified Communications (UC) based on IP telephony
•Common infrastructure for all telephony and data services
•Calls are usually established by the Session Initiation Protocol (SIP)
Next Generation Networks
(NGN)

5. •Voice-over-IP
•All IP devices connected through the Local Area Network (LAN)
•No NTBAs, no splitters, no separate cabling
•IP easily connected and accessible
•Open standards instead of proprietary phones
•Free choice of phones
LAN now also does telephony

6. Free choice of phones

7. •Most common protocol for IP telephony
•Usually free choice of Internet Service Providers (ISP)
•Replace all types of analog and ISDN connections
SIP trunking

8. •Usually any number of lines and phone numbers can be booked
•Can usually be done by a click or call
•No additional physical connections required
•Numbers no longer wired and easily portable
•Additional foreign SIP trunks may reduce costs further
SIP trunking

9. •Recently bought phone system now to be replaced?
•High workload?
•How to include peripheral devices?
Why hesitate?

10. •Private Branch Exchange (PBX)
•Software IP phone system
•SIP trunks and IP phones registered trough LAN
•Actual location of the IP PBX practically irrelevant
•Decide: Hosted/Cloud PBX vs. Inhouse-On-Premise PBX
Choosing your PBX

11. •Running on an external server in a data center
•Accessed trough internet connection
•Pricing usually user-based
•Configured und maintained by hosting provider
•Lower initial costs + monthly rental costs
Hosted/Cloud PBX

12. •Running locally within the company
•Full access
•Higher initial costs but less running costs
•Decide: Virtualised or dedicated server hardware
-> Lower hardware costs or failure isolation
In-house/On-premise PBX

13. •Don’t rush
•State of telecommunication and network infrastructure
•Network configuration and internet connection
•Ongoing maintenance and service contracts?
•Decide: Continue using current hardware or completely switch to VoIP?
Planning the migration

14. •Keeping your old hardware?
-> Build a bridge
Planning the migration

15. •Network requirements
•Quality of Service (QoS)
•Power over Ethernet (PoE)
•Virtual local area networks (VLAN)
Planning the migration

16. •Define a time window for the migration
•Plan further development of telecommunication infrastructure
•Point out both short- and middle-term investments
•New technology leads to changing business processes
-> Training for end users
Planning the migration

17. •Don’t rush
•Changing business processes
•New requirements for end users
•Make a plan
•Use both systems in parallel for a transitional period
Soft Migration:
Pilot Phase

18. •Choose the least critical department to start using the new setup
•Train the employees
•Choose next department to proceed
Soft Migration:
Implementation

19. •New IP PBX and legacy phone system are running in parallel
•Gateway connects PBX to legacy phone system, analog or ISDN devices and
providers
•Proprietary phones replaced by IP phones
Soft Migration:
Outcome

20. Discover more
Have a look at our white papers and case studies
askozia.com/casestudies

21. Questions?
Time to wake up!
markus.ehlers@askozia.com