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1904
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5
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Can Cisco 3945 ISR support DS3 voice

Sumit Bhargava
Level 1
Level 1

Need to provision Voice Gateway for a Remote Site with

Bandwidth 45 Mbps and total Users 3-14

What VG should be selected and does T3/E3 the same as DS3/T3?

Regards

Sumit

8 Replies 8

Sumit Bhargava
Level 1
Level 1

Cisco 3945 ISR comes with NM-1-T3/E3, is this the same voice DS3(T3) and can it used for above mentioned requirement.

Thanks in advance

Deployment Model used is Centralised CallProcessing Model

WAN Connectivity is over MPLS

Remote Site, User Count is between 3 to 16 with Bandwidth 45 Mbps (Application like Video Conferencing could be there)

Cisco 2951 ISR comes with WAN Interface-NM-1 T3/E3

Note: Cisco T3/E3 Network Module provides performance requirements to deploy advanced, voice, video and data applications over the WAN.

Can this WAN Interface (NM-1 T3/E3) be used to provide WAN Connectivity between Central (HQ)Site and Remote Site if the Bandwidth Requiremnet is 45 Mbps?Please advice?

Thanks

paolo bevilacqua
Hall of Fame
Hall of Fame

What do you mean with "voice gateway" ?

Do you have phone service from telco and if yes which exact interface ?

Steven Holl
Cisco Employee
Cisco Employee

You need an AS5xxx to support a voice DS3.  The ISRs do not have any DS3 cards which support voice and the allocation of DSPs, to my knowledge.

Steve is correct, on the other hand is probable that the OP actually asked about a regular router, not a T3 voice gateway,

Deployment Model used is Centralised CallProcessing Model

WAN Connectivity is over MPLS

Remote Site, User Count is between 3 to 16 with Bandwidth 45 Mbps (Application like Video Conferencing could be there)

Cisco 2951 ISR comes with WAN Interface-NM-1 T3/E3

Note: Cisco T3/E3 Network Module provides performance requirements to deploy advanced, voice, video and data applications over the WAN.

Can this WAN Interface (NM-1 T3/E3) be used to provide WAN Connectivity between Central (HQ)Site and Remote Site if the Bandwidth Requiremnet is 45 Mbps?Please advice?

Thanks

Yes, that card will allow for a data DS3.  You can send data, IP, VoIP traffic over the circuit.

What you can't do on the 3800 is terminate a voice DS3 (which is essentially a circuit containing 28 PRIs to a Telco for voice calls to/from the PSTN).  You need the AX5xxx for that, since the 2800 cannot terminate a voice DS3.

You do not need a 2951 for DS3. A 2901 is enough.

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