2 Cisco Product Catalog, March, 2004
Figure 17-4: Cisco 3640A Router Rear View
Figure 17-5: Cisco 3620 Router Rear View
Options for Cisco 3600 Series
Key Features and Benefits
The Cisco 3660, Cisco 3640A, and Cisco 3620 routers support the following network applications and services:
• Analog and digital voice services
The voice/fax network modules for the Cisco 2600 and Cisco 3600 series multiservice access routers enable packet voice
technologies including VoIP and VoFR. Cisco’s voice solutions provide the means for integrating both voice and data
within a single network and allow users to take advantage of services, such as toll-bypass, without sacrificing voice
quality. The digital T1/E1 Packet Voice Trunk Network Module provides a flexible and scalable T1/E1 voice solution and
supports up to 60 voice channels in a single network module. The analog voice/fax network modules slide into Cisco
2600 and 3600 chassis slots and contain either one or two voice interface card (VIC) slots. The VICs currently available
are two-port foreign exchange station (FXS), foreign exchange office (FXO), E&M 2-wire and 4-wire interfaces and a
basic rate interface (BRI). The voice modules support all major industry codecs including G.711, G.723, G.726, G.728,
G.729 and G.729a/b for customized solutions and to meet the need for high voice quality and bandwidth efficiency
• ATM networking services
Four new multiport T1/E1 ATM network modules with Inverse Multiplexing over ATM (IMA) and 3 ATM OC-3 network
module are now available for the 3600 series multiservice access platforms. These new multiport ATM modules allow
service provider and enterprise customers to cost-effectively increase bandwidth, extending multiservice capabilities to
remote-branch-office locations through ATM. These network modules support a robust set of ATM features including
UBR, VBR-rt, VBR-nrt, and ABR ATM class of services, ATM Forum User Network Interface (UNI) 3.0, UNI 3.1, and
UNI 4.0 signaling, Permanent Virtual Circuits (PVCs) and Switched Virtual Circuits (SVCs), and ATM Adaptation Layer
5 (AAL5) to name a few.
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