Specifications

Chapter 4: Collaboration 4-11
• The gateway is interoperable with the Cisco Signaling System 7 (SS7) Interconnect for Voice Gateway
(signaling gateway).
• This gateway provides Stratum-3 clock support and 802.1Q/1p VLAN/Inter-Switch Link (ISL) support.
• This gateway provides up to three chassis per rack (14RU chassis) and only 30A at 48V for 4 CT3 cards of
high-complexity voice (11ma per voice channel, 12ma with route processor redundancy).
Specifications
Feature Cisco AS5850
Slots
12 feature board slots; 2 ERSC slots
Processor
650 MHz Broadcom 1250 Dual Core
ERSC Switch Fabric
5 Gbps. Layer 3/4 switching
Memory
1 GB SDRAM with ECC per ERSC
128 MB SDRAM (with parity) per feature card
Trunk Cards
Single CT3 plus 216 DSP Channel feature card; 24 Ce1/CT1 feature card; Single port
Channelized STM-1 feature card
Universal Port Card
324 Channel DSP-feature card
Egress Ports
Dual Gigabit load-balanced redundant Ethernet ports with GBIC interfaces for user traffic
Dual 10/100 Mbps Ethernet port with RJ-45 connector for management traffic
LAN Protocols
IP, bridging, HSRP, 802.1Q
Service Support
Port Policy Management and SS7/C7
Routing Protocols
RIP, RIPv2, OSPF, IGRP, EIGRP, BGPv4, IS-IS, NHRP
Access Protocols
PPP, SLIP, TCP Clear
Bandwidth Optimization
Multilink PPP (MLPPP), TCP/IP header compression, Bandwidth Allocation Control Protocol
(BACP), Bandwidth on demand, Nonfacility-associated signaling (NFAS), traffic shaping
Network Security
RADIUS or TACACS+, PAP or CHAP authentication, local user/password database, DNIS, CLID,
call-type pre-authentication, Inbound/outbound traffic filtering (including IP), SNMPv2,
SNMPv3
Virtual Private Networking
IP Security (IPSec) and policy enforcement (RADIUS or TACACS+) L2TP, Layer 2 Forwarding
(L2F), and generic routing encapsulation (GRE) tunnels; Firewall security and intrusion
detection; QoS features (committed access rate [CIR], Random Early Detection [RED], IP
Precedence, policy-based routing)
Channelized T1
PRI, robbed-bit signaling; Loop Start; Immediate Start, and Wink Start Protocols
Channelized DS3
PRI, robbed-bit signaling; Loop Start; Immediate Start, and Wink Start Protocols
Channelized E1
CAS, PR1, E1 R2,SS7 IMT
Channelized STM-1
CAS, PR1, E1 R2,SS7 IMT
Voice Compression
G.711, G.723.1 (5.3K and 6.3K), G.726, G.729ab, G. Clear, GSM-FR,
DSP Voice Features
Echo cancellation, programmable up to 128 MB; Transparent transcoding between A-law and
mu-law encoding; Voice activity detection, silence suppression, comfort noise generation;
Fixed and adaptive jitter buffering; Call progress tone detection and generation—Dial tone,
busy, ring-back, congestion, and re-order tones with local country variants; DTMF,
Multifrequency (MF); Continuity Testing (COT)
Voice and Fax Signaling
Protocols
H.323v2, H.323v4, SIP, MGCP 1.0, TGCP 1.0, Voice XML, Real-Time Streaming Protocol (RTSP),
Extended Simple Mail Transfer Protocol (ESMTP); Fax out (transmission) Group 3, standards EIA
2388 Class 2 and EIA 592 Class 2.0 at modulations V.33, V.17, V.29, V.27ter, V.21; ITU-T T.30, T4; Fax
detection; Fax and modem passthrough; Open Settlements Protocol (OSP), Media Recording
Control Protocol (MRCP) to enable TTS and ASR Services
ISDN Protocols Supported
Sync mode PPP, V.110 at rates up to 38400 bps; Network- and user-side ISDN; NFAS with
backup D-channel; QSIG, Feature Group B, Feature Group D; DoVBS