Cisco AS5200 - Universal Access Server Manuel d'utilisateur télécharger pdf (Page 11)

Cisco AS5200 Universal Access Server Overview 1-11

12-Port Modules

The access server supports the following 12-port modules:

• V.34 12-port module

• 56K 12-port module

• V.110 12-port module

In an access server with a dual T1/PRI card installed, you can install up to four 12-port

modules for a total of 48 ports. If your access server includes a dual E1/PRI card, you can

install up to ﬁve 12-port modules for a total of 60 ports. The dual E1/PRI card (see

Figure 1-4) includes an extra slot for a 12-port module, which provides you with 12 extra

ports to terminate up to 60 lines.

Note The 12-port modules are not included unless speciﬁed by your order. You can order

bundled systems that include 12-port modules or you can order the modules separately.

Refer to the section “Getting Help” in the appendix “Troubleshooting the Universal Access

Server” for ordering information.

V.34 12-Port Module

Each modem on the V.34 12-port module supports V.42bis data compression and uses the

Hayes Smartmodem AT and V.25bis command sets. The Microcom Networking Protocol

(MNP) and V.42 error-correction protocol standards provide error-free performance. The

modem offers MNP Class 10 with Adverse Channel Enhancements (ACE). MNP 10

includes:

• Multiple connection attempts during autoreliable link negotiation

• Negotiated speed upshifts

• Aggressive adaptive packet assembly

• Dynamic Transmit Level Adjustment

The V.34 module supports the following protocol and modulation standards:

• ITU-T V.42bis compression and MNP Class 5 data compression

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Cisco AS5200 - Universal Access Server Manuel d'utilisateur Page 11