muti-mode to single-mode

[letman2]

I am changing from muti-mode to single-mode on one of my epn's. I made the change in ASA to single-mode and type A in the change fiber-link command. I changed to 300a SMOC units. The EPN did not come up. The fiber tests good but it is hot would that cause the link not to come up? This is a CSS system. Is there any other changes to be made in ASA?

 

[mikeydidit]

Letman this is a doc that I have saved on the fiber transceivers.

9823A - Short range
This is a short range multi-mode fiber transceiver used for cable distances of 4900 ft or less.

9823B - Long range
* Supports multi-mode fiber between PPN and EPN to a distance of 25,000 feet (4.73 miles)
* Two transceivers per installation, four if duplication is in effect
* Supports 62.5 or 50 micron multi-mode fiber connection

300A - long range
* Single-mode lightwave transceiver that transmits and receives light up to 115,000 ft. (22 miles or 35 km)
* Single-mode fiber optic cable connects from the lightwave transceiver on 1 EPN carrier to the lightwave transceiver on another PPN or EPN Carrier
* Cable consists of 2 separate 8-10 micron core diameter fiber optic
* Fiber optic connection allows full duplex (simultaneous bi-directional) transmission

If this is over a short distance I would try installing an attenuator (one on both transmits sides) and see if it comes up. I would start with a 10 db and work my way down to a smaller loss. .


! CAUTION:
CAUTION: With the 300A transceiver it is possible, when there is low loss in the fiber
between 300A transceivers, that the receiver may saturate and not recover data
correctly from the link. An in-line, single mode (1310 nm) attenuator may be
required to increase the loss to greater than 10 dB but less than 17 dB. In-attenuators are available that provide 5, 10, or 15 dB of attenuation.

Table 1: Transceiver specifications
Specification Allied Telesyn
AT-MC103XL1
Allied Telesyn
AT-MC102XL2
DAJ13 DAL4 300A5 9823B6 9823A7
Maximum
Distance
15 km 2 km 10 km 10 km 35 km 25,000
feet
4900
feet
Fiber
Connector
Type
SC SC SC LC ST-II ST-II ST-II
Transmitter
Wavelength
1310 nm 1310 nm 1310 nm 1310 nm 1310 nm 1310 nm 850 nm
Mode Field
Diameter
9 ?m 62.5 nm 9 ?m 9 ?m 9 ?m 62.5 ?m 62.5 ?m
Cladding
Diameter
125 ?m 125 ?m N/A N/A 125 ?m 125 ?m
Transmitter
Output Power
(Minimum)
-15 dBm -19 dBm -9.5dBm -9.5 dBm -8 dBm -19 dBm -18 dBm
Transmitter
Output Power
(Typical)
-11.5 dBm -16.8 dBm N/A N/A -8 dBm -18 dBm -17 dBm
Transmitter
Output Power
(Maximum)
-8 dBm -14 dBm -3 dBm -3 dBm -5 dBm -13 dBm -12 dBm
Receiver
Wavelength
1310 nm 1310 nm 1310 nm 1310 nm 1310 nm 1310 nm 850 nm
Receiver
Sensitivity
(Minimum)
-31dBm -31.8 dBm -20 dBm -20 dBm -30 dBm -30 dBm -30 dbm
Receiver
Sensitivity
(Typical)
-31dBm -34.5 dBm N/A N/A -30 dBm -30 dBm -30 dBm
Receiver
Sensitivity
(Saturation)
-8 dBm -14 dBm -3 dBm -3 dBm -11 dBm -11 dBm -11 dBm
1. Single-mode

When is the last time you helped someone, just because you were able to?

For the best response to a question, read faq690-6594

 

[mikeydidit]

https://support.avaya.com/css/P8/documents/003803715

This was taken from the above doc starting on page 2. If you need more.

When is the last time you helped someone, just because you were able to?

For the best response to a question, read faq690-6594

 

[letman2]

Thanks for you help. I am ordering the attenuators and will try to do the change over to single mode next week.