Welltel’s Session Border Controllers
(SBCs) help enterprises to reduce
communications costs, enable Unified
Communications (UC) and protect their
networks against Internet Protocol
(IP)-based attacks.
enhanced performance,
increased security
Welltel - Session Border Controller
SBC 120
- sbc 120 model
The Welltel Session Border Controller is an
advanced SBC built for smaller enterprise
networks, delivering robust security and proven
interoperability. The Welltel SBC also supports
built-in survivability against broadband failure,
so calls go through even if the wide area network
(WAN) goes down, using local backup ISDN
facilities, connected to the SBC through one of
Welltel’s Media Gateways, or alternatively the SBC
can be connected to a second Broadband facility,
in case the primary broadband facility is out of
service. The SBC configurations are designed for
ease of deployment and growth.
Sessions
Maximum number of SIP-to-SIP calls: 120 Maximum number of total concurrent calls: 120 Maximum number of transcoded sessions (based upon codec type): 80
Registrations
Maximum number of registered users: 250
Encryption
Maximum number of TLS sessions: 120 Maximum number of SRTP sessions: 120
Business Continuity
• PSTN fallback when WAN is down via an external Media Gateway
• Resilient Branch Appliance secondary IP connection such as DSL
• Multiple SIP trunking service provider support for redundancy
• Site survivability through built-in SIP registrar • ITSP 999/112 Support
Security
• TLS for signalling encryption
• Secure RTP (SRTP) for media encryption • Built-in VoIP firewall (full IP tables stack) • Topology hiding; User privacy
• Prevention of Denial-of-Service (DoS) and Distributed DoS (DDoS) attacks
• Dialled Number Identification Service (DNIS), Calling Line Identification (CLID), Call type pre-authentication
• Traffic separation (VLAN interface separation) • Malformed packet protection
• Access Control Lists (ACLs) • IPsec VPN tunnel
• NAT/NAPT and port forwarding • RTCP/RTCP-XR
Signalling
• Back-to-Back User Agent (B2BUA)
• SIP (UDP/TCP/TLS) to/from SIP (UDP/TCP/TLS) • SIP Message Manipulation (SMM)
Media Services
• Transcoding
• G.711 (alaw/ulam), G.729A/B (8 kbps)
• Video codec pass-through: H.264 AVC, H.264 SVC, H.263+, H.263, H.261
• T.38 with CNG tone detection
• DTMF/RFC4733; Inband DTMF; SIP INFO/RFC-2833 • Voice Activity Detection (VAD)
• Comfort noise generation and packet loss concealment
• Automatic call type detection — voice, fax or modem
• Music on-Hold
• Generate call progress tones — ringback, busy, re-order
• RTP inactivity monitoring (dead call detection) • RTP pass-through
Protocol Support
• RIP, OSPF as dynamic IP routing protocols • NTP
• Https
• DHCP server/DHCP client • RTP/RTCP, SRTP/SRTCP • SIP over UDP, TCP, TLS • Asynchronous DNS for SIP • DNS
• NAT
Welltel - Session Border Controller
SBC 120
Routing/Policy
• Maximum number of call route entries: 300 • Active Directory/LDAP-based call routing • Routing based on quality metrics • Least cost routing
• On-board call forking • Call hold
• Screening, blocking, routing, presentation, call type filters
• Route prioritisation
• Leading digit routing; International routing; URI-based routing
• Digit manipulation (name/number manipulation using regular expression)
• SIP routing
• Based on source and destination IP address • Fully Qualified Domain Name (FQDN)
• Detect proxy failure and route to alternate paths • Re-route on failure based on full Cause Code
re-routing
Quality of Service (QoS)
• Quality of experience (QoE) monitoring • Round Trip Delay
• Jitter (max, mean) • Packet Loss (max, mean) • Packet Loss Rate (max, mean)
Bandwidth management
• Call Admission Control (CAC) (deny excessive calls based on static configuration)
• P-time mediation • Per-call statistics • Diffserv/DSCP marking
Operations, Administration and Management
• Single, secure, web-based GUI with real-time monitoring
• SNMP v2/v2c for comprehensive network management using third-party management systems
• Configuration backup and restore; Configuration upload from one site to another
• CDR reporting
• Syslogs for troubleshooting, with support for remote syslog server
• Historical Stats and Calls reports
• Call Recording with optional encryption of recorded messages
• RTCP/RTCP-XR • Caller ID support
Welltel - Session Border Controller
SBC 120
HARDWARE Specifications
Memory
• 2 or 4 GB DDR3-1066 DRAM
CPU
• AMD G series T40E APU, 1 GHz dual core (Bobcat core) with 64 bit support
Hard Disk
• SanDISK 16GB
• mSATA drive 16GB expandable up to 48GB
Power
• 6 to 12W of 12V DC power depending on CPU load
Front Panel
• Status Indicators Front Panel LEDs • Power
Cooling System
• Internal passive convection (no fan)
AC Power External Unit
• Compact size AC adapter
• Input voltage 100-240 VAC 50/60 Hz • Output voltage 12 V DC
• Maximum current 2A
• Jack inner diameter 2.5 mm, outer diameter 5.5 mm, center positive mm high
Chasis
• Metal enclosure
• Dimensions 168 mm wide x 157 mm deep x 30 mm high
Environment
• -40 to 70˚ C Storage • 5 to 40˚ C Operating
• 5 to 85% Non-Condensing Operating Humidity
Rear Panel
• 2 x USB 2.0 interfaces
• DB9 serial console debug port • WAN and LAN Interfaces
• 3 x 10/100/1000 BASE-T Ethernet ports with VLAN support
• Auto-MDIX
