Cisco Service Module
Product overview
The Cisco High-Density Analog Voice and Fax Service Modules provide enterprises, managed services providers, and service providers the ability to directly connect public-switched telephone networks (PSTNs) and existing telephony equipment to Cisco 4000 Series Integrated Services Routers (ISRs). These fixed-port (FXS and FXO) modules provide Dual-Tone Multifrequency (DTMF) detection, voice compression and decompression, call progress tone generation, Voice Activity Detection (VAD), echo cancellation, and adaptive jitter buffering.
Product details
The FXO port is used to connect to PBX or key systems, or to provide off-premises connections to the PSTN. It supports battery reversal detection and caller ID. The FXO port is also used to connect to analog Centralized Automatic Message Accounting (CAMA) trunks to provide dedicated E-911 service (in North America only).
- Service Module offers better usage with maximum efficiency and convenience
- Service Module with data networking application/usage for maximum productivity and usability
Call for Availability
Shipping calculated at checkout
Product overview
The Cisco High-Density Analog Voice and Fax Service Modules provide enterprises, managed services providers, and service providers the ability to directly connect public-switched telephone networks (PSTNs) and existing telephony equipment to Cisco 4000 Series Integrated Services Routers (ISRs). These fixed-port (FXS and FXO) modules provide Dual-Tone Multifrequency (DTMF) detection, voice compression and decompression, call progress tone generation, Voice Activity Detection (VAD), echo cancellation, and adaptive jitter buffering.
Product details
The FXO port is used to connect to PBX or key systems, or to provide off-premises connections to the PSTN. It supports battery reversal detection and caller ID. The FXO port is also used to connect to analog Centralized Automatic Message Accounting (CAMA) trunks to provide dedicated E-911 service (in North America only).
- Service Module offers better usage with maximum efficiency and convenience
- Service Module with data networking application/usage for maximum productivity and usability
Cisco 4000 Series Integrated Services Routers
- 4351
- 4451

LTT PARTNERS
We are a full-service Systems and Solutions Integrator. Through close relationships with dozens of top technology brands, we are the preferred partner for many enterprise organizations and industry leaders.

ONGOING SUPPORT
We pride ourselves on building long-term relationships with our partners and clients. From initial consultation to post-installation maintenance, we are always available and happy to help through our support network.