SysMaster Gatekeeper

Product Overview

Introduction

VoiceMaster offers a full scale H.323/SIP compliant Gatekeeper/Session Border Controller. This is the only gatekeeper in the industry that allows dynamic call control through a proprietary calling time authorization mechanism. Some of the key functionalities of the Gatekeeper/Session Border Controller include:

Authentication

• IP Address of the calling station
• Username (H323ID) of the calling station
• PIN Number/Tech-Prefix of the callings station
• Calling ID (ANI) of the calling station
• Any combination of the above

The authentication is flexible enough to allow dynamic call authentication in environments where the clients change dynamically their IP addresses (such as IP Phone and Microsoft NetMeeting (TM) clients). The easiest way to implement dynamic client authentication is PIN Number/Tech-Prefix based. Simply use the standard PIN numbers to pre-pend to the phone number.

Authorization

• Optimized Routing includes among other things LCR (least cost routing algorithm)
• Preferred Provider Routing to allow managers to explicitly select their termination endpoints and providers
• ASR (Average Success Rate) routing to allow dynamic selection of providers with better ASR rates
• Route Fail over
• Authorization is dynamic and change as you change rates dynamically to provide a single point of entry to your routing system. By inserting new rates you also change the billing and the routing of each call.

Dynamic Call Management

• Dynamic call timing for single calls
• Support for wholesale multiple call timing
• Support for concurrent calls
• Dynamic call disconnect

VoiceMaster offers the only gatekeeper in the industry that will disconnect a call after its predefined time has elapsed. This unique dynamic call management functionality quarantines that all wholesale and user accounts are billed dynamically against calls in progress.

Gatekeeper/Session Border Controller Modes of Operation

• Direct/static Mode to allow call resolution without RAS message control. This mode will allow number translation and dynamic call control given that the participating gateways support canMapAlias attribute.
• Routed Mode to allow direct control of RAS messages with very low level of bandwidth utilization. This mode allows number translation and dynamic call control for gateways that do not support canMapAlias attribute.
• Proxy Mode to allow full RAS and RTP data transfer for gateways behind NAT or gateways that want to keep their identity. This bandwidth intensive mode fully controls the RAS and Q.932 data streams and supports number translation and dynamic call control.

Optimized Routing Call Management

Optimized Routing call management is used when the company wants to optimize the call termination costs in real time. The algorithm allows dynamic call handling and call routing to select the most cost efficient termination point or provider. It requires the dialing plan management and gatekeeper functionality to be highly integrated to allow all dialing plan changes to be propagated to the underlying gatekeeper in real-time.

Compatibility with other vendors

• Cisco gateways and gatekeepers
• Lucent gateways
• Quintum gateways and gatekeepers
• Clarent gateways
• H323/SIP complaint gateways and gatekeepers
• IP Phones
• Lucent PIN capability to authorize Lucent PIN users
  

Gatekeeper/Session Border Controller Utilization per VM Platform Level

SysMaster Gatekeeper/Session Border Controller is fully integrated into the VoiceMaster Billing and Routing Platform to provide a centralized call management for services.
Depending on the VM Platform level chosen, the SysMaster Gatekeeper/Session Border Controller could be utilized in several ways.
The table below displays how SysMaster Gatekeeper/Session Border Controller could be best utilized.

H.323 Gatekeeper Utilization*
	Max Concurrent Calls			Number of Users
	Static Mode	Routed / Softswitch Mode	Proxy Mode
Level 1	1000	500	350	up to 1.5M
Level 2	2000	1000	700	up to 1.5M
Level 3	3000	1500	1050	1M - 5M
Level 4	8000	4000	2800	1M - 5M
Level 5	20000	10000	7000	Unlimited

*All corresponding values are projection estimates only.

SIP Gatekeeper Utilization*
	Max Concurrent Calls		Number of Users
	Routed / Softswitch Mode	Proxy Mode
Level 1	500	350	up to 1.5M
Level 2	1000	700	up to 1.5M
Level 3	1500	1050	1M - 5M
Level 4	4000	2800	1M - 5M
Level 5	10000	7000	Unlimited

*All corresponding values are projection estimates only.